Contains the following types of materials: memoirs, maps / charts, photos, correspondence, clippings. Contains information pertaining to the following wars and time periods: World War I (WWI) -- United States (U.S.), -- Western Front; World War II (WWII) -- U.S., -- European Theater of Operations (ETO), -- Pacific; 1946-1950. Contains information pertaining to the following military units and organizations: 140th Infantry Regiment; 35th Division; Infantry Board; 15th Infantry Regiment; commanding officer, Trains; 13th Armored Division; commanding officer, 18th Armored Group (Amphibious); commanding officer, 66th Tank Regiment; 2nd Armored Division; Commanding Officer, Combat Command A; 7th Armored Division; commanding officer, 342nd Infantry Regiment, 86th Infantry Division; commanding officer, 44th Infantry Regiment (Philippine Scouts); Ryukyus Command. General description of the collection: The William S. Triplet papers include memoirs of a U.S. soldier in WWI; memoirs of an Army colonel in WWII, Europe, 1944 and 1945; a WWII survey filled out by Colonel Triplet; recollections of his time in 18th Armored Group (Amphibious); recollections at 86th Infantry Division, Philippines; recollections of formation of 44th Infantry Regiment (Philippine Scouts); recollections of 44th Infantry Regiment on Okinawa; many photos; perspectives of commanding amphibious training and doctrine development; Army acceptance of Jeep; elimination of Japanese holdouts in Philippines after WWII; his observations of various commanders (good and bad) and organizations in combat, as well as, rear areas; Task Force Rhea; Blue Beach; and Red Beach.