After secondary school, he joined the French Air Force in 1926 for five years. A non-commissioned officer, he followed the course for élève aspirant . He then graduated from the École nationale de l'aviation civile and became an engineer and test pilot. A reserve officer, he was staying at Royan as a flight instructor when war was declared in September 1939. He heard the appeal of 18 June 1940 and, after the second Armistice at Compiègne, refused to fly for the German air force. Émile Allegret quickly joined the French Resistance. Obliged to conceal his identity, he became an agent of the resistance movementOrganisation civile et militaire. After joining the 6th arrondissement of Paris, he carried out information missions on the Atlantic coast and in particular at Royan, where he revealed the location of fortifications and coastal defense batteries. He succeeded in a mission to avoid weapons and ammunition stored in the basement of the City Hall of Royan. Hunted by the Gestapo, he had to leave France and succeeded, the 24th of December 1942, in joining Spain by crossing the Pyrenees. He enlisted in the Free French Forces the 25th of January 1943 at the French mission at Gibraltar. Arriving in London, he was incorporated in the Free French Forces the 13th of February 1943, and on the 5th of March 1943 he joined the Bombardment Group "Lorraine", called "Squadron 342". He flew against German anti-aircraft 23 December 1943, and again the 5 and 9 February 1944. During this time, in January 1944, the lieutenant Allegret took command of the squadron "Metz" and multiplied the bombing operations. Then, he participated in the historic mission of protection, smoke screening troops for Normandy landings on the Normandy coast the 6th of June 1944. He was seriously injured on duty, 27 January 1945. He ended the war with the rank of Captain, carrying out 55 bombings in total with "Lorraine", including several skim bombings. After the war, Émile Allegret started a career as an air navigation engineer. He joined the Secrétariat général de l'aviation civile in 1961 as an air navigation division engineer. He became head of the Toulouse-Blagnac Airport. He last job was head assistant at the Nice Côte d'Azur Airport before retiring in May 1968. Émile Allegret died 22 November 1990 at Vaux-sur-Mer.
