[1] Wornham was subsequently transferred to the Marine barracks within Philadelphia Navy Yard and attended the Field Officer's Course at local Basic school.

After his return to the United States, Wornham was assigned to the Marine detachment within summer camp of President Calvin Coolidge in Criglersville, Virginia, in November 1929.

Captain Wornham was subsequently assigned to the Marine detachment aboard the light cruiser USS Helena and participated in the patrol voyage in the Caribbean.

He was promoted to the rank of major in May 1941 and transferred to the Headquarters Marine Corps in Washington, D.C., where he served in the Personnel Division under Brigadier General Littleton W. T. Waller Jr. command.

During his time at Headquarters Marine Corps, Wornham was promoted to the rank of lieutenant colonel in August 1942 and later decorated with the Navy Commendation Medal for his distinguished service there.

His unit was subsequently assigned to the 5th Marine Division under Major General Keller E. Rockey and began preparing for the Iwo Jima operation.

[4] Following the Japanese surrender in August 1945, Wornham commanded his regiment during the occupation duties in Japan until he was ordered back to the United States in December 1945.

Colonel Wornham returned to Washington, D.C., in February 1952 and was assigned to Headquarters Marine Corps as assistant chief of staff for operations and training.

Landing with the assault waves on extremely difficult fire-swept beaches, Colonel Wornham led his combat team through heavy hostile fire to establish the initial beachhead in his sector.

Serving gallantly throughout this entire operation, he made continuous reconnaissance of the terrain in his zone of action and exposed himself to heavy fire in front-line positions to encourage his men.

Passing through an area infested with snipers on 12 March, he went to one of his battalions held up by strong enemy resistance and, despite intense mortar and small-arms fire, rallied his men to renew the attack and advance the front lines while inflicting heavy losses on the Japanese.