He had a private law practice in Oacoma, South Dakota, where he also farmed. Sharpe was the Lyman County State's Attorney from 1916 to 1920. During World War I he served as a corporal assigned to Camp Dodge in Iowa, and later as an officer candidate at Camp Grant (Illinois).
Sharpe practiced law privately in Oacoma, South Dakota, where he also worked as a farmer. He served as the Lyman County State's Attorney from 1916 to 1920. During World War I, Sharpe was stationed at Camp Dodge in Iowa and later became an officer candidate at Camp Grant (Illinois).