October 1917
The following events occurred in October 1917:
[October 1], 1917 (Monday)
- Germany launched counterattacks on British positions in Polygon Wood, West Flanders, Belgium.
- Eighteen Gotha bombers of the Luftstreitkräfte set out on to raid the United Kingdom, with 11 of them reaching England. British antiaircraft guns fired 14,000 rounds at them without scoring a single hit, but falling fragments from spent antiaircraft shells from the worn-out guns killed eight and injured another 67 people.
- U.S. Coast Guard ship USS Mohawk collided with a British cargo ship in the Atlantic Ocean off Sandy Hook, New Jersey and sank, with all 77 crew members rescued.
- The Royal Navy conducted the first launch of an aircraft from a battleship. Royal Naval Air Service Flight Commander Frederick Rutland took off in a Sopwith Pup fighter from a platform mounted on a 15-inch gun turret of the battlecruiser.
- The Royal Navy tested an aircraft catapult for the first time, using a compressed-air catapult aboard Slinger to launch an unmanned Short 184 aircraft in a series of trial launches.
- The 139th Infantry Regiment of the U.S. Army was established with the merger of infantry regiments from Kansas and Missouri.
- The U.S. Government established the Aircraft Board with Howard E. Coffin as chair.
- Albert Einstein was appointed director of the newly formed Kaiser Wilhelm Institute for Physics in Munich.
- Born: Guido Fibbia, Italian air force officer, top fighter ace for Regia Aeronautica during World War Two, two-time recipient of the Silver Medal of Military Valor and the Iron Cross, in Treviso, Italy
- Died: Ivan Aguéli, Swedish artist and writer, known for his melding of post-impressionism with Arabic art following his conversion to Islam
[October 2], 1917 (Tuesday)
- Finland held parliamentary elections with the Social Democratic Party of Finland winning 44 per cent of the vote.
- Royal Navy armoured cruiser HMS Drake was torpedoed and sunk by German submarine off Rathlin Island with the loss of 18 out of her 900 crew.
- The Flying Field at Anacostia, a U.S. military air base, was opened to train pilots and test new aircraft. It was renamed the Anacostia Experimental Flying Field shortly thereafter and eventually the Bolling Air Force Base after Colonel Raynal Bolling on July 1, 1918.
- Born: Christian de Duve, English biologist, recipient of the Nobel Prize in Physiology or Medicine for his research into cell biology, in Thames Ditton, England ; Cahal Daly, Irish clergy, Archbishop of Armagh and Primacy of Ireland from 1990 to 1996, in Loughguile, Ireland
- Born: Charles Drake, American actor, known for roles in Winchester '73 and Harvey, in New York City ; Francis Jackson, English composer and organist, director of York Minster from 1946 to 1982, in Malton, North Yorkshire, England; Rosaleen Norton, New Zealand-Australian occultist, proponent of witchcraft and wiccanism in Sydney, earning her the media nickname "The Witch of Kings Cross", in Dunedin, New Zealand
- Died: Camille Tissot, French naval officer, pioneer of wireless telegraphy
[October 3], 1917 (Wednesday)
- A soldiers' revolt erupted at a garrison in Dubno, Ukraine.
- German submarine struck a mine and sank in the North Sea with the loss of all 14 crew.
- The National Party of the United States held its first conference in Chicago where it formally endorsed American participation in World War One.
- Born: Les Schwab, American business leader, founder of Les Schwab Tire Centers, in Bend, Oregon ; Odd Lundberg, Norwegian speed skater, silver and bronze medalist at the 1948 Winter Olympics, in Brandbu, Norway
[October 4], 1917 (Thursday)
- Battle of Broodseinde - The British Second and Fifth Armies, supported by the I ANZAC Corps, overwhelmed German 4th Army's defenses at Broodseinde Ridge in West Flanders, Belgium. Some 5,000 German troops were taken prisoner, adding to the 30,000 casualties the army suffered overall in the first 10 days of fighting in October. British suffered around 20,000 casualties, including 6,423 for Australia and 1,853 for New Zealand.
- An Italian royal decree was issued allowing heavy criminal sanctions against anyone who committed or incited acts of defeatism.
- Born: Violeta Parra, Chilean folk musician, leading figure in the Nueva canción movement that popularized traditional Chilean music, in San Carlos, Chile ; Luis Carniglia, Argentine association football player and manager, striker for the Boca Juniors in the 1940s and manager for Real Madrid C.F. in the 1950s, in Olivos, Buenos Aires, Argentina
- Died: Dave Gallaher, Irish-New Zealand rugby player, team captain for The Original All Blacks and member of the New Zealand national rugby union team from 1896 to 1909
[October 5], 1917 (Friday)
- German submarine struck a mine and sank in the North Sea off with the loss of all 22 crew.
- The Palestine Brigade of the Royal Flying Corps was established to provide air support during the Sinai and Palestine Campaign, which included the No. 40 Wing.
- British politician Arthur Lee donated the country house Chequers to the British government.
- Born: Allen Ludden, American game show host, best known for the television game show Password, in Mineral Point, Wisconsin ; Magda Szabó, Hungarian novelist, known for works including Abigél, in Debrecen, Hungary
[October 6], 1917 (Saturday)
- The fourth and final Duma, the legislative assembly of the Russian Empire, formally ended and was dissolved, with the Russian Provisional Government anticipating elections for the Russian Constituent Assembly to replace it.
- The U.S. Government enacted the Trading with the Enemy Act, which restricted trade with countries hostile to the United States.
- Born: Marjorie Guthrie, American choreographer, wife to folk singer Woody Guthrie and mother to Arlo Guthrie, in Atlantic City, New Jersey ; Fannie Lou Hamer, American activist, chief organizer of Freedom Summer for the civil rights movement, in Montgomery County, Mississippi
[October 7], 1917 (Sunday)
- The largest airship ever built at the time, the L 57, was wrecked and destroyed by fire while trying to take off for a test flight in poor weather. The Zeppelin aircraft was 743 feet in length and could carry 2,418,700 cubic feet of hydrogen gas for long-distance flights from Europe to Africa.
- German submarine struck a mine and sank in the North Sea with the loss of all 41 crew.
- Born: June Allyson, American actress, best known for her on-screen pairings with Van Johnson in films such as Too Young to Kiss in which she won a Golden Globe, in New York City ; Rose Piper, American painter, known for abstract works inspired by blues music including The Death of Bessie Smith, in New York City
- Died: Serhii Vasylkivsky, Ukrainian artist, known his prolific work on the Ukraine including the Cossack series
[October 8], 1917 (Monday)
- German submarine sank British cargo ships SS Memphian and SS Greldon in St. George's Channel, killing 32 and 28 crew respectively.
- German submarine sank British cargo ship SS Richard de Larrinaga in the Atlantic Ocean, killing 35 crew.
- The Royal Flying Corps established air squadrons No. 90 and No. 107.
- Born: Danny Murtaugh, American baseball player and manager, second baseman for Philadelphia Phillies, Boston Braves and Pittsburgh Pirates from 1941 to 1951, manager of the Pittsburgh Pirates during the 1960 and 1971 World Series, in Chester, Pennsylvania ; Billy Conn, American boxer, world light heavyweight champion from 1939 to 1941, in Pittsburgh
- Born: Rodney Robert Porter, English biochemist, recipient of the Nobel Prize in Physiology or Medicine for his research on antibodies, in Newton-le-Willows, England ; Tex Banwell, British army officer, served as political decoy for General Bernard Montgomery during World War Two, in Newport, Essex, England ; Walter Lord, American writer, author of A Night to Remember, about the sinking of the RMS Titanic, in Baltimore
- Died: Ebenezer Ward, Australian politician, member of the South Australian House of Assembly from 1870 to 1900
[October 9], 1917 (Tuesday)
- Battle of Poelcappelle - German forces halted the British advance on the Western Front in West Flanders, Belgium but at a cost of 35,000 casualties during the first ten days of October. Total British and Commonwealth casualties for the day's fighting were around 11,500.
- During the Battle of Poelcappelle, a squad of 71 Australian soldiers with the 10th Battalion disappeared without a trace in Celtic Wood during a diversionary attack on German positions. Speculations of the unaccounted for men ranged from clerical error to the troops being massacred and buried in a mass grave. Official Australian military document confirm at least 37 men remained unaccounted.
- Royal Navy cruiser HMS Champagne was torpedoed and sunk in the Irish Sea by German submarine with the loss of 58 of her 305 crew.
- The U.S. Marines established the 8th Marine Regiment.
- Died: Hussein Kamel of Egypt, Egyptian noble, Sultan of Egypt from 1914 to 1917 ; Sarah Aaronsohn, Jewish Palestinian spy, member of the Nili spy network, sister to botanist Aaron Aaronsohn
[October 10], 1917 (Wednesday)
- A coalition of Conservative, Liberal and independent members of Canadian Parliament led by Prime Minister Robert Borden formed the Unionist Party of Canada to enact conscription and govern Canada through the remainder of World War I.
- Japanese Government Railways extended the Ban'etsu East Line in Fukushima Prefecture, Japan with stations Kawamae and Natsui serving the line.
- The first novel of the science fiction series Barsoom, A Princess of Mars, by Edgar Rice Burroughs was published in hardcover by A.C. McClurg & Company.
- Norwegian sports club Tønsberg-Kameratene] was established in Tønsberg, Norway with sections for association football, track and field, boxing, wrestling and weightlifting.
- Born: Thelonious Monk, American jazz musician, known for numerous jazz hits including "'Round Midnight", "Blue Monk", and "Straight, No Chaser", second most recorded jazz artist after Duke Ellington, in Rocky Mount, North Carolina
- Died: Henry Crimmel, American artist, renowned glass-maker and co-founder of the Novelty Glass Company and Sneath Glass Company
[October 11], 1917 (Thursday)
- Operation Albion - A German amphibious force landed at Tagalaht on the island of Saaremaa in the Russian-controlled West Estonian archipelago in the Baltic Sea to capture the islands and stage a launching point to attack Petrograd.
- The Armenian National Congress met in Tbilisi, Georgia to determine the role the Armenian population would play in post Imperial Russia.
- The No. 41 Wing was established by the Royal Flying Corps with Lieutenant-Colonel Cyril Newall in command.
- The U.S. Army established the 28th, 30th, and 31st Infantry Divisions.
- The Richmond Professional Institute was established in Richmond, Virginia as a medical and healthcare professional school.
[October 12], 1917 (Friday)
- First Battle of Passchendaele - Allied forces failed to take key defensive ridges held by the Germans west of the village of Passchendaele, Belgium. The brunt of the 13,000 casualties were taken by ANZAC units, with the New Zealand division suffering 2,725 casualties including 845 killed, the single biggest loss for New Zealand. German casualties were estimated at 12,000.
- Operation Albion - German forces captured 20,000 Russian prisoners and 100 guns as they expanded out from Tagalaht to the rest of the island of Saaremaa in the Baltic Sea.
- The first regiment was stationed at the newly commissioned Naval Operating Base in Norfolk, Virginia.
- The Brazilian sports club Fonseca was established in Niterói, Brazil, and included association football, martial arts, swimming and gymnastics.
- Born: James McAuley, Australian poet and literary critic, known for poetry collections including A World of its own and literary criticism such as The rhetoric of Australian poetry, in Lakemba, New South Wales, Australia
- Died: George Augustus King, New Zealand army officer, commander of the New Zealand Pioneer Battalion ; Clarence Jeffries, Australian army officer, recipient of the Victoria Cross ; Lewis McGee, Australian soldier, recipient of the Victoria Cross for action during the Battle of Broodseinde
[October 13], 1917 (Saturday)
- Miracle of the Sun - A massive gathering of pilgrims in Fátima, Portugal, estimated between 30,000 and 40,000 simultaneously witnessed the sun change colors and move in impossible paths across the sky for ten minutes. The miraculous event was foretold by local children Lúcia dos Santos and siblings Jacinta and Francisco Marto, who had been experiencing visions from Our Lady of Fátima for months. After years of investigation, the Catholic Church concluded in 1930 that the event was genuine but skeptics have cited mass delusion brought on by weeks of speculation or meteorological illusions as the cause.
- Tire manufacturer Yokohama was established in Tokyo as a joint venture between Yokohama Cable Manufacturing and B.F. Goodrich.
- The United States Oil & Gas Association was established in Tulsa, Oklahoma which at the time was considered the "Oil Capital of the World".
- The city of South Euclid, Ohio was incorporated.
- Born: George Osmond, American entertainer, patriarch of The Osmonds family singing group, in Etna, Wyoming
- Died: Florence La Badie, American actress, best known for work in the film serial The Million Dollar Mystery in which she performed her own stunts
[October 14], 1917 (Sunday)
- British cargo ship SS Semantha was torpedoed and sunk in the Mediterranean Sea by German submarine with the loss of 32 of her crew.
- German submarine struck a mine and sank in the North Sea with the loss of all 26 crew.
- The Uruguay national football team won its second South American Championship, defeating Argentina 1–0 in the series final in Parque Pereira, Montevideo.
- The St. Clements Roman Catholic Church held first Mass in Saratoga Springs, New York.
- The historic drama Cleopatra was released, with Theda Bara in the starring role as the Egyptian queen. Directed by J. Gordon Edwards, the film also starred Fritz Leiber as Julius Caesar and Thurston Hall as Mark Antony. Controversy around its sensual images only made the film more popular the biggest hit of 1917. The film was considered lost but some fragments along with production stills survived, allowing a portion of the film to be reconstructed for screening at the Hollywood Heritage Museum.
- The Argentine association football club Almirante Brown de Arrecifes was established in Arrecifes, Argentina.
- Born: Geoffrey Bibby, English archaeologist, best known for the discovery of the ancient city of Dilmun and the pioneer of Arabian archaeology, in Heversham, England
- Died: Nathaniel Hone the Younger, Irish painter, member of the Hone family ; Eddie Latheron, English association football player, inside forward for the Blackburn Rovers F.C. from 1906 to 1917 and the England national football team from 1913 to 1914
[October 15], 1917 (Monday)
- Battle of Mahiwa - Nigerian colonial troops under command of General Jacob van Deventer fought German colonial soldiers under command of Major-General Kurt Wahle at Mahiwa, German East Africa. General Paul von Lettow-Vorbeck, commander of forces in German East Africa, sent additional battalions that encircled the Nigerian force.
- The first naval action between the U.S. Navy and Imperial German Navy occurred when American destroyer USS Cassin exchanged fire with German submarine SM U-61 off the coast of Ireland, with both vessels damaged. The sole casualty was U.S. sailor Osmond Ingram, who jettisoned several depth charges from a point where a German torpedo was about to hit, saving the ship from catastrophic damage. He was awarded the Medal of Honor posthumously, and was the first recorded enlisted American casualty of World War One.
- Dutch dancer Mata Hari was executed by firing squad at Vincennes outside Paris for spying on behalf of Germany.
- The Chicago White Sox defeated the New York Giants to win the World Series by four games to two.
- Royal Navy air officer John Alcock oversaw the first test flight of his experimental fighter biplane, named the Alcock Scout. However, only one had been made and when it crashed on another test flight in 1918, no further models were built.
- Born: Alan W. Livingston, American music and television producer, best known for the television western Bonanza and the creation of Bozo the Clown, founder of Capitol Records, in McDonald, Pennsylvania ; Jan Miner, American actress, best known as Madge in the television Colgate-Palmolive commercials, in Boston ; Arthur M. Schlesinger Jr., American historian, recipient for the Pulitzer Prize for Biography or Autobiography for his historic volume A Thousand Days on the Presidency of John F. Kennedy, in Columbus, Ohio
- Born: Ruairí Brugha, Irish politician, member of the Fianna Fáil ; Kevin Boland, Irish politician, cabinet minister for the Irish Assembly from 1965 to 1976, in Dublin ; Adele Stimmel Chase, American artist, best known for her ceramics works that became part of Pop art and Op art movements, in San Francisco
- Died: Maxime Collignon, French archaeologist, known for his research in ancient Greek art and architecture
[October 16], 1917 (Tuesday)
- The first free elections in the Dutch East Indies were held.
- Battle of Moon Sound - British submarines engaged but failed to halt the progress of a German naval squadron dispatched to control the Baltic Sea around the West Estonian archipelago.
- Battle of Mahiwa - South African reinforcements attacked German troops from the opposing side, but the Germans regrouped to a ridge near Mahiwa to hold off the attacks.
- Operation Albion - German forces won complete control of the island of Saaremaa in the Baltic Sea.
- Born: Alice Pearce, American actress, best known as Gladys Kravitz in the 1960s television sitcom Bewitched in which she won an Emmy posthumously, in New York City ; Murray MacLehose, British colonial administrator, 25th Governor of Hong Kong, in Glasgow
- Died: Walter Flex, German writer, author of The Wanderer between the Two Worlds
[October 17], 1917 (Wednesday)
- German light cruisers and ambushed an Allied convoy in the North Sea, sinking British destroyers and along with several Scandinavian merchant ships carrying coal. Over 300 naval and civilian crew were killed in the attack.
- Battle of Moon Sound - German and Russian naval squadrons clashed in the Baltic Sea, ending with a Russian retreat and the loss of its pre-dreadnought ship Slava, which was too damaged to retreat and had to be scuttled.
- U.S. Army troopship USAT Antilles was torpedoed and damaged in the Bay of Biscay by German submarine with the loss of 67 lives. Survivors were rescued by before the ship was scuttled.
- The Trans-Australian Railway opened, linking 1,052 miles of railroad between Port Augusta in South Australia and Kalgoorlie in Western Australia. The rail included 309 miles of straight rail with no curves across the Nullarbor Plain, making it the world's longest railway straight.
- The Co-operative Party was formed as the official political party of the British co-operative movement.
- The German association football club BC Aichach was established in Aichach, Germany.
- Born: Martin Donnelly, New Zealand cricketer, member of the New Zealand national cricket team in 1937, in Ngāruawāhia, New Zealand ; Dick Young, American sports journalist, baseball columnist for the New York Daily News for 45 years
- Born: Marsha Hunt, American actress, known for her roles in Born to the West, These Glamour Girls, and Johnny Got His Gun, member of the Committee for the First Amendment during the Hollywood blacklist, in Chicago; Sumner Locke Elliott, Australian writer, author of Careful, He Might Hear You and Rusty Bugles, in Sydney
- Died: Bobby Atherton, Welsh association football player, midfielder and forward for various clubs including Hibernian F.C. and Middlesbrough F.C. from 1897 to 1906, member of the Wales national football team from 1899 to 1905 ; John Franklin Botume, American singer and choir director, author on several books on singing including Modern Singing Methods: Their Use and Abuse
[October 18], 1917 (Thursday)
- Battle of Mahiwa - A German force of 1,500 men counterattacked and repelled the attacking South African and Nigerian force of 4,900 men, inflicting 2,700 casualties. The Germans suffered between 500-600 casualties, or thirty percent of its strength.
- Operation Albion - Russian forces evacuated from Muhu in the Baltic Sea.
- Born: Robert A. Lewis, American air force officer, co-pilot of the Enola Gay that dropped the first A-bomb on Hiroshima, in Ridgefield Park, New Jersey
[October 19], 1917 (Friday)
- Operation Albion - German forces landed at Hiiumaa Island in the Baltic Sea.
- Battle of Moon Sound - German ships entered the Gulf of Riga and began to clear the minefield, where most casualties occurred during the operation.
- Thirteen Zeppelins set out on a high-altitude raid against the middle of England but severe weather conditions prevented all but two in reaching their targets. One of the airships bombed London, killing 24 people and injuring nine others, as well destroying the Austin Motor Works plant at Longbridge, England. The second airship bombed Northampton and London, killing 24 people and injuring nine others.
- Carl Swartz left office as Prime Minister of Sweden after dismal election results for the right-wing party in the September Riksdag elections. He was replaced by liberal leader Nils Edén.
- American ocean liner was torpedoed and damaged in the Atlantic Ocean by German submarine. She was escorted to Le Havre, Seine-Maritime, France by U.S. Navy destroyer where she was subsequently repaired and returned to service.
- Dallas Love Field was opened in Dallas as a military base for training pilots enlisted in World War One.
- The Luftstreitkräfte, the air arm of the Imperial German Army, established air squadron Jagdstaffel 80.
- The Institute of Quarrying was established during a meeting of quarry managers in Caernarfon, Wales. The organization expanded with branches in Australia, New Zealand, Malaysia, South Africa and Hong Kong.
- Born: Walter Munk, Austrian-American oceanographer, best known for his tidal research into oceans and ocean currents with the Scripps Institution of Oceanography, in Vienna ; Evgenia Antipova, Russian artist, member of the Leningrad School of Painting, in Toropets, Russia ; Robert P. Baldwin, American air force pilot, recipient of the Silver Star and Legion of Merit for action during the Korean War, in Los Angeles
[October 20], 1917 (Saturday)
- Operation Albion - German forces occupied all of Hiiumaa Island in the Baltic Sea, ending the campaign.
- British cargo ship ' was launched by Robert Duncan & Co in Port Glasgow, Scotland. In a remarkable coincidence, the ship was wrecked in the English Channel in the exact spot as its predecessor.
- Police in Washington D.C. arrested Alice Paul, a prominent member of the suffragist protest group Silent Sentinels, while she carried a banner that quoted U.S. President Woodrow Wilson: "The time has come to conquer or submit, for us there can be but one choice. We have made it." Paul was sentenced to seven months in prison where, after enduring two weeks of solitary confinement, was released to prison hospital where she started a hunger strike to protest the poor conditions of the Virginia penitentiary where many fellow Sentinel members were also imprisoned.
- Irish poet W. B. Yeats, then 51, married 25-year-old Georgie Hyde-Lees at the Harrow Road register office in London with Ezra Pound as best man. It had been a couple of months after he had a proposal of marriage to his ex-mistress's daughter, Iseult Gonne, rejected.
- The U.S. Army established the Aberdeen Proving Ground in Aberdeen, Maryland as an ordinance testing site.
- Born: Jean-Pierre Melville, French film director, best known for his French New Wave crime dramas Le Doulos, Le Samouraï, and Le Cercle rouge, in Paris ; William F. Barnes, American college football player and coach, served as coach for the UCLA Bruins football team from 1958 to 1964, in Cape Girardeau, Missouri ; Stéphane Hessel, German-French diplomat and Holocaust survivor, author of Time for Outrage!, in Berlin
- Died:''' Elise Kemp, New Zealand nurse, only military nurse from the country to be killed in action in World War One ; John T. Wilder, American army officer, Union commander at the Battle of Hoover's Gap during the American Civil War
[October 21], 1917 (Sunday)
- Malta held a general election for six out of its eight seats.
- Born: Dizzy Gillespie, American jazz trumpet musician, credited for the development of bebop and promotion of Afro-Cuban music, in Cheraw, South Carolina
[October 22], 1917 (Monday)
- British forces launched two separate assaults on the German front in Belgium, capturing the village of Polecappelle but failing to seize a key road junction north of Houthulst Forest from German control. British casualties were 479 while German casualties were unknown, save for 125 prisoners.
- U.S. President Woodrow Wilson appointed A. Mitchell Palmer to head the Office of Alien Property Custodian which administered property seized from those deemed an enemy of the United States during World War One.
- The Charlie Chaplin-directed film The Adventurer, starring Chaplin regulars Edna Purviance and Eric Campbell, was released through Mutual Film. It was the last film by Campbell before his death in a car accident two months later.
- The Sherlock Holmes anthology of previously published stories His Last Bow included the newest short story of the same name by Arthur Conan Doyle.
- The first section of the Seibu Tamagawa Line for Tokyo opened for service.
- Born: Joan Fontaine, British-American actress, known for her roles in Rebecca, Jane Eyre and The Constant Nymph, recipient of the Academy Award for Best Actress for her role in Suspicion, sister to Olivia de Havilland, in Tokyo
- Died: Bob Fitzsimmons, British boxer, held world champion titles in all three major weight classes, considered the lightest heavyweight champion in the Guinness World Records
[October 23], 1917 (Tuesday)
- Battle of La Malmaison - The French Sixth Army attacked the German-held French village and fort of La Malmaison, France, capturing the communes of Allemant and Vaudesson.
- Battle of Wadi Musa - A force of 700 Arab rebel troops ambushed an Ottoman column dispatched to secure the Hejaz railway in Jordan, killing 400 men and capturing 300 prisoners.
- October Revolution - The Bolshevik Party voted in favor of overthrowing the Russian Provisional Government, with a resolution citing "an armed uprising is inevitable, and that the time for it is fully ripe."
- The Canadian Railway War Board met for the first time at Windsor Station in Montreal.
- The German government established the Reich Economic Office, the predecessor to the Federal Ministry for Economic Affairs and Energy.
- Born: Robert Bray, American actor, best known for the role of ranger Corey Stuart in the TV series Lassie, in Kalispell, Montana
- Died: Eugène Grasset, Swiss artist, pioneer of Art Nouveau
[October 24], 1917 (Wednesday)
- Battle of Caporetto - Also known as the Twelfth Battle of the Isonzo, Austro-Hungarian and German forces triggered 894 canisters that released chlorine gas onto the Italian Second Army entrenched in the valley. Most Italian soldiers retreated as their supplied gas masks could only last for two hours, with an estimated 500 to 600 defenders killed. The Central Powers then used infiltration tactics and stormtroopers armed with light machine guns, mortar launchers, grenades and flamethrowers to break through the line, leading to its collapse six days later.
- The No. 190 Squadron was established by the Royal Flying Corps at Rochford, England.
- Australian Flying Corps established air squadrons No. 7 and No. 8.
- Telephone inventor Alexander Graham Bell attended the unveiling of a monument to him in front of a crowd of thousands in Brantford, Ontario.
- Born: Denys Val Baker, Welsh writer, author of The Door is Always Open and The Sea’s in The Kitchen, in Upper Poppleton, England ; Donald N. Aldrich, American marine officer, recipient of the Navy Cross and Air Medal for action in the Solomon Islands campaign during World War Two, in Moline, Illinois
- Died: James Carroll Beckwith, American artist, member of the Naturalism movement in the United States
[October 25], 1917 (Thursday)
- The Petrograd Military Revolutionary Committee was established with Leon Trotsky as leader to organize the overthrow of the Russian Provisional Government.
- Some 1,700 Sinn Féin delegates attended a convention in the Dublin Mansion House as Arthur Griffith was replaced as the organisation's president with Éamon de Valera.
- The French Lyceum was established in Korçë, Albania, later renamed the Albanian National Lyceum in 1921 and the Raqi Qirinxhi High School in 1944.
- Born: Carl Forssell, Swedish fencer, bronze medalist in the 1948 Summer Olympics and silver medalist in the 1952 Summer Olympics, in Stockholm ; Lee MacPhail, American sports executive, president and general manager of the Baltimore Orioles and New York Yankees, and president of the American League, son to Larry MacPhail, in Nashville, Tennessee ; William Remington, American economist, convicted of perjury stemming from espionage charges made by Soviet spy Elizabeth Bentley, in New York City
- Died: Jack Standing, English actor, best known for his Broadway roles including The Belle of New York and Florodora, and his film roles such as Hell's Hinges ; Maximilian Bayer, German army officer, founder of Scouting in Germany and the 27th Jäger Battalion for the Imperial German Army
[October 26], 1917 (Friday)
- Brazil declared war against Germany.
- The Italian military disaster at Caporetto, Italy lead to the fall of the Paolo Boselli government.
- Second Battle of Passchendaele - British and Canadian forces attacked defensive ridges east of the village of Passchendaele, Belgium that the Allies failed to take earlier in the month.
- The U.S. Army established the 2nd Infantry Division which included the 3rd Infantry Brigade.
- Born: Mario Biaggi, American politician, U.S. Representative from New York from 1969 to 1988, in New York City
[October 27], 1917 (Saturday)
- Battle of La Malmaison - The French Sixth Army captured the Pinon commune and the surrounding forest from the Germans in northern France, thus liberating the village and fort of La Malmaison, France from German control. French losses were 2,241 killed, 8,162 wounded and 1,460 missing. However, French forces captured 11,157 German prisoners and 1,100 machine gun, artillery and mortar pieces. German losses were estimated at 38,000 killed or missing.
- Third Battle of Gaza - British and French naval vessels bombarded Gaza to soften Ottoman defensive prior to infantry assault on November 1. An Ottoman aircraft strafed one of the British ships, killing 38 sailors.
- Battle of Buqqar Ridge - The Desert Mounted Corps repelled an Ottoman attack on its garrison at el Buqqar Ridge, Syria during the last days of the Stalemate in Southern Palestine.
- British flying ace Arthur Rhys-Davids disappeared while pursuing a German squadron east of Roeselare, Belgium. His death wasn't confirmed until December 29 when German command informed he had been shot down by German flying ace Karl Gallwitz. At the time, he had been credited with 27 victories including German aces Carl Menckhoff and Werner Voss.
- The Irish Volunteers held its convention immediately following the Sinn Féin convention, with most of the delegates having attended both. Newly-elected Sinn Féin president Éamon de Valera was also elected president of the Volunteers.
- Born: Oliver Tambo, South African politician, President of the African National Congress from 1967 to 1991, in Nkantolo, South Africa
[October 28], 1917 (Sunday)
- Switzerland held its federal election, with the Free Democratic Party of Switzerland retaining its majority in the National Council.
- Second Battle of Passchendaele - The Canadian forces advance slowed due to German resistance but were able to hold the line for reinforcements, at a cost of 2,481 casualties.
- U.S. Army troopship was torpedoed and damaged in the Atlantic Ocean off Brest, France by German submarine with the loss of nine of her crew.
- Dublin beat Tipperary 5-4 and 4–2 in the All-Ireland Senior Hurling Championship Final in Croke Park, Dublin.
- The historical romance The Woman God Forgot, directed by Cecil B. DeMille and starring Geraldine Farrar in the title role, was released and became the fifth box office hit of the year. A copy of the film is in the George Eastman House Motion Picture Collection.
- Born: Jack Soo, American actor, best known for the role of Nick Yemana in the police television sitcom Barney Miller, in Oakland, California ; Honor Frost, Cyprus archaeologist, pioneer in underwater archaeology, in Nicosia, Cyprus
- Died: Prince Christian of Schleswig-Holstein, Danish-British noble, husband to Princess Helena of the United Kingdom ; Eugenio Elia Levi, Italian mathematician, known for his contributions to group theory, brother to Beppo Levi
- Died: Cecil Rawling, British explorer, commander of expeditions to Tibet and Dutch New Guinea ; Isaac S. Taylor, American architect, best known for his designs for key buildings in St. Louis
[October 29], 1917 (Monday)
- Battle of Pozzuolo - Two Italian brigades staged a rearguard action against the advancing German and Austrian forces at Pozzuolo del Friuli, Italy as the Italian Second Army retreated from their disastrous defeat at the Battle of Caporetto.
- Three German Luftstreitkräfte bombers set out for the first heavier-than-air night raid on England in four weeks. Two of the bombers diverted to Calais, France due to bad weather, but the third reached England and bombed the Essex coast.
- The U.S. Army established the 92nd Infantry Division.
- The Merriwa railway line in New South Wales, Australia was completed.
- Roscoe "Fatty" Arbuckle and Buster Keaton starred in the film comedy Coney Island.
- Born: Eddie Constantine, American actor, best known for the role of Lemmy Caution, most notably in the French New Wave science fiction film Alphaville, in Los Angeles ; Harold Garfinkel, American sociologist, developed ethnomethodology as a field of inquiry for social behavior, in Newark, New Jersey
[October 30], 1917 (Tuesday)
- Vittorio Emanuele Orlando replaced Paolo Boselli as Prime Minister of Italy and continued in that role through the rest of the war.
- Battle of Caporetto - After delaying a decision for five days despite pressure from his officers, Italian General Luigi Cadorna relented and ordered the Italian Second Army to retreat back to the Tagliamento River. Meanwhile, the two Italian brigades assigned to protect the rear were destroyed by the German and Austrian forces at the Battle of Pozzuolo.
- Second Battle of Passchendaele - Canadian forces advanced from the starting line, capturing key defense positions around the hamlets of Meetcheele and Goudberg, Belgium at the cost of.
- Charles Stewart became Premier of Alberta, replacing Arthur Sifton who had been chosen to be the provincial representative of the federal Unionist coalition in Ottawa.
- Twenty-two German Gotha bombers set out to raid London, with the newly developed 4.5-kg incendiary bomb included in their bomb loads. Fewer than half the bombers reached the London area, and many of the incendiary bombs failed to ignite for the bomb drops that were delivered. The remaining planes bombed Kent, destroying a gasometer in Ramsgate but achieving little else. Five of the bombers crashed while attempting to land upon returning to their bases. Bad weather prevented further raids against England until December.
- German flying ace Lieutenant Heinrich Gontermann was performing aerobatics when the upper wing of his Fokker Dr.I fighter broke off, causing him to crash where he died from injuries. He had 39 victories, tying him with Lieutenant Carl Menckhoff as the 13th-highest-scoring German ace of World War One.
- The Institut d'optique Graduate School was established as a post-secondary school for the field of optics in France.
- Born: Maurice Trintignant, French race car driver, member of the Formula One circuit from 1950 to 1964, winner of the 1954 24 Hours of Le Mans race, in Sainte-Cécile-les-Vignes, France ; Anna Marly, Russian-French singer and songwriter, known for protest and political songs including "Chant des Partisans" and "La complainte du partisan", in Saint Petersburg
- Born: Bobby Bragan, American baseball player, catcher and shortstop for the Philadelphia Phillies and Brooklyn Dodgers from 1940 and 1948, in Birmingham, Alabama ; Robert Maheu, American business executive, CEO of Nevada operations for Howard Hughes, author of Next to Hughes: Behind the Power and Tragic Downfall of Howard Hughes by His Closest Advisor, in Waterville, Maine
- Died: Alex Decoteau, Canadian-Cree athlete and law enforcer, first indigenous police officer in Canada, track and field representative for Canada at the 1912 Summer Olympics
[October 31], 1917 (Wednesday)
- Battle of Beersheba - The British XX Corps and Desert Mounted Corps of the Egyptian Expeditionary Force attacked and captured Beersheba, Syria, from Ottoman forces, ending the stalemate in Southern Palestine and starting the Southern Palestine Offensive. Some 1,947 Ottoman troops were taken prisoner and another estimated 1,000 were killed or wounded. British casualties were 171 killed. The capture of Beersheba was clinched with a rare mounted charge by the Australian Mounted Division.
- Real estate services company Cushman & Wakefield was established in New York City by brothers-in-law J. Clydesdale Cushman and Bernard Wakefield. The firm now operates in 60 countries and employs more than 43,000 people.
- Born: Patience Gray, British writer, known for best-selling cook and travel books including Plats Du Jour and Honey From A Weed, in Shackleford, England ; Bruce Bennett, American politician, Attorney General of Arkansas from 1957 to 1960, in Helena, Arkansas
- Born: Evan Mackie, New Zealand air force officer, commander of the No. 92 and No. 80 Squadron during World War Two, recipient of the Distinguished Service Order and two Distinguished Flying Crosses from both the United Kingdom and United States, in Waihi, New Zealand ; Gordon Steege, Australian air force officer, held various commands during World War Two including No. 3 Squadron, recipient of the Distinguished Service Order and the Distinguished Flying Cross, in Chatswood, New South Wales, Australia