Born in Marylebone, Boyd was educated at the Royal Military College, Sandhurst. On 20 January 1909, he was commissioned on the 'unattached list for the Indian Army' and attached to a British Army regiment in India before being appointed to the Indian Army in March 1910. Boyd was posted to the Indian Army's 5th Cavalry. He was promoted Lieutenant on 20 April 1911.
First World War
He was promoted temporary Captain, Indian Army, to date from the 1 September 1915 in the London Gazette of 28 July 1916. From 25 April 1916, Boyd saw service in the First World War as a flying officer with the Royal Flying Corps. Later in 1916, he was a pilot on the Western Front with No. 27 Squadron; on 9 July, he was promoted to flight commander. He was awarded the Military Cross in the London Gazette of 18 August 1916. Boyd stayed on the Western Front and continued to earn promotion. On 26 October, he was made officer commanding of a squadron and on 19 January 1917, took command of No. 66 Squadron. In June 1917, he was moved to a staff appointment and on 2 December, he was made a staff officer, 2nd Class, RFC. By 7 July 1918, Boyd was in Mesopotamia as officer commanding No. 72 Squadron.
Interwar years
From 18 January 1919, Boyd was an officer commanding and a staff officer. On 1 August, he was awarded a permanent commission as a major. By 21 January 1920, he was a staff officer with the Mesopotamian Wing Headquarters. He was also involved as a staff officer with the Directorate of Operations and Intelligence. On 23 October 1922, Boyd was once again commanding a squadron, this time No. 24 Squadron. On 26 February 1923, he was made the Commandant of the School of Army Co-operation. Starting 21 January 1926, he attended the Army Staff College, Camberley. By 21 January 1928, he was on the directing staff of the college. On 4 January 1930, Boyd became the deputy director of staff duties. On 7 August 1931, Boyd was the officer commanding, RAF Aden. By 16 April 1934, he was Secretary of State for Air for the Headquarters Fighting Area. By 24 October 1935, he was air officer commanding, Central Area. On 1 May 1936, Boyd was promoted to air commodore of No. 1 Group RAF. He was appointed director of personal services at the Air Ministry in December 1936.
In 1938, as an air vice marshal, Boyd became commander-in-chiefRAF Balloon Command. On 1 December 1940, he was replaced by Air Marshal Sir Leslie Gossage at RAF Balloon Command. Boyd was then promoted to air marshal and appointed deputy to the air officercommanding-in-chiefMiddle East. On his way to Egypt, Boyd was to stop in Malta. However, the aircraft in which he and his staff were passengers was forced down over enemy-controlled Sicily by a group of Italian fighter aircraft. There is some controversy over his capture as Boyd was indoctrinated into "Ultra" intelligence and the advantage gained from breaking some German codes, which led to fears he could reveal this secret. Secondly one history book refers to "the reported circumstance is a navigation error and consequent fuel shortage". After destroying his confidential papers by setting his own aircraft on fire, Boyd became a prisoner of war. He spent much of the war in the Castle Vincigliata camp near Florence, Italy. When Italy capitulated in September 1943, Boyd and two British Army generals, with help from the Italian resistance movement, escaped while being transferred from Vincigliata. After spending time in the Italian countryside and a failed rendezvous with a submarine, they arrived by boat at Termoli, then went on to Bari where they were welcomed as guests by GeneralSir Harold Alexander, commanding the Allied Armies fighting on the Italian Front, on 21 December 1943. Their escape was led by a Lieutenant Colonel Pat Spooner, who had escaped once before and returned to German-controlled Italy. Of all of RAF Bomber Command's wartime group commanders, Boyd spent the shortest time in command of his appointed group. In late July 1944, he was divorced. Little more than a week later, on 5 August, he was dead from a heart attack.
