St. Julien Ravenel Marshall (January 27, 1904 – March 24, 1989) was officer in the United States Marine Corps with the rank of brigadier general.

He was also a distant cousin of George C. Marshall, who served as Chief of Staff of the United States Army in World War II.

[4][5] He attended the Central High School in Washington, D.C., and subsequently received appointment to the Virginia Military Institute in Lexington and graduated in summer 1924 with a Bachelor of Science degree.

He then served as JAG officer on the staff of commandant, 14th Naval District at Pearl Harbor, Hawaii under Rear Admiral Harry E. Yarnell.

Marshall served in various legal assignments until the beginning of World War II, when he joined 1st Marine Brigade under Major General Holland Smith.