Foster was the brilliant young all-rounder of the immediate pre-war years — he had captained Warwickshire to their first County Championship in 1911 at the age of 22, and the following winter had taken 32 wickets in the Ashes series in Australia. By 1914, when first-class cricket stopped, he had taken 718 first-class wickets and scored over 6,000 runs. He enlisted in the Royal Field Artillery. In August 1915, while on dispatch duty on a military motorcycle, he was thrown from the bike in an accident the precise nature of which is no longer fully recoverable. His leg was badly injured. After repeated operations and a long convalescence, he was discharged from the army in 1917 unfit for further service. He attempted a comeback in 1919 but it was clear within a few innings that the leg could no longer cope with the demands of bowling. He did not play first-class cricket again. His later life was marred by mental illness and bankruptcy, and he died in a psychiatric hospital in 1958. The accident took one of England's most promising cricketers permanently out of the game at 26.