He subsequently served in the Marine Corps for 37 years, including service in Haitian Campaign and World War II.

Hill was promoted to the rank of first lieutenant in June 1906 and participated in Second Occupation of Cuba with 1st Provisional Regiment of Marines.

He returned to the United States in January 1909 and after brief tour of duty was transferred to the 1st Brigade of Marines and sailed for Philippines in July 1909.

Hill was subsequently assigned to the detachment aboard gunboat USS Helena and sailed for Hankou, China to protect Standard Oil Company property.

He was recalled to active duty in January 1942, and served at Marine Corps Headquarters with the Naval Examining Board until the end of World War II.