Onslow S. Rolfe was a career officer in the United States Army. He attained the rank of brigadier general during World War II as commander of the Mountain Training Center at Camp Hale, Colorado, and the 71st Infantry Division.

Camp Hale was a U.S. Army training facility in the western United States, constructed in 1942 for what became the Tenth Mountain Division. Located in central Colorado between Red Cliff and Leadville in the Eagle River Valley at an elevation of 9,238 feet (2,815 m), it was named for General Irving Hale. Onslow S. Rolfe, who had developed mountain warfare techniques as commander of the 87th Mountain Infantry Regiment, was selected to command Camp Hale.