Who led the 9th Army Corps to victory in the Third Battle of Picardy 
Battle of Amiens (1918): The Battle of Amiens, also known as the Third Battle of Picardy (French: "3ème Bataille de Picardie" ), was the opening phase of the Allied offensive which began on 8 August 1918, later known as the Hundred Days Offensive, that ultimately led to the end of the First World War.
i don't know