 Later in the Haitian campaign, on November 11, 1915, Ostermann was wounded in action and returned to the United States for hospitalization.Ordered to Washington, D.C., in 1938 to become the assistant adjutant and inspector of the Marine Corps, he was advanced to the post of adjutant and inspector with the rank of brigadier general in February 1939.With the coming of World War II, Ostermann requested combat duty as either a brigadier general or a colonel.