Lester B. Pearson - First World War

First World War

When the First World War broke out in 1914, he volunteered for service as a Medical Orderly with the University of Toronto Hospital Unit. In 1915, he undertook overseas service with the Canadian Army Medical Corps as a stretcher bearer with the rank of Private, and had a subsequent commissioning to the rank of Lieutenant. During this period of service he spent two years in Egypt and Greece. He also spent time in the Serbian Army as a Corporal and a Medical Orderly. In 1917, Pearson transferred to the Royal Flying Corps (as the Royal Canadian Air Force did not exist at that time), where he served as a Flying Officer until being sent home with injuries from two accidents; while training as a pilot at an air training school in Hendon, England, Pearson survived an airplane crash during his first flight.

In 1918, he was hit by a London bus during a citywide blackout and was sent home as an invalid to recuperate, and was then discharged from the service. It was as a pilot that he received the nickname of "Mike", given to him by a flight instructor who felt that "Lester" was too mild a name for an airman. Thereafter, Pearson would use the name "Lester" on official documents and in public life, but was always addressed as "Mike" by friends and family.