Winans completed the course one year later and joined the 1st Brigade of Marines under Bridagier general Theodor P. Kane in Haiti. He participated in the peacetime operations and jungle patrols against Cacos rebels and returned to the United States in November 1925. Winans then served at Marine Barracks, Quantico, Virginia, before he was transferred to the Marine Corps Base San Diego, California in August 1927. In August 1930, Winans returned to the Marine Corps Schools, Quantico and entered the Company officers' course, which he completed one year later. He then participated in the peacekeeping operations in Nicaragua, before returned stateside and was ordered to the Army Industrial College in Washington, D.C. in August 1931. Winans graduated in May 1932 and was promoted to Major. He then remained in Washington area, serving at the Headquarters Marine Corps and was promoted to lieutenant colonel on July 27, 1935. Winan was ordered to Far East in October 1936 and assumed command of 2nd Battalion, 4th Marines. He participated in the defense of Shanghai International Settlement in China during the period of rising tension between China and Japan. Winans remained in China until April 1938, when he was transferred to Marine Corps Base San Diego, California. He was promoted to colonel on March 1, 1941. World War II Following the Japanese attack on Pearl Harbor and the United States entry into World War II, Winans was still serving as Chief of staff, Marine Corps Base San Diego under Brigadier general William H. Rupertus and was co-responsible the training of new recruits due to critical need of troops for combat units. He served in this capacity consecutively under generals James L. Underhill, and William C. James, before assumed temporary command of the base in February 1944. He was relieved by Brigadier general Matthew H. Kingman in April that year and served in San Diego Base until December, when he was transferred to the Hawthorne Naval Ammunition Depot, Nevada as Commanding officer of Marine Barracks there. Winans was responsible for the guarding of the Depot until the end of April 1946, when he was relieved of duty awaiting retirement. Winans retired on August 1, 1946, and was advanced to the rank of brigadier general on the retired list for having been specially commended in combat. Death General Roswell Winans died on April 7, 1968, at the San Diego Naval Hospital, San Diego, California. He was