Rainier War Soldiers move an M142 high mobility artillery rocket system at Joint Base Lewis-McChord, Wash., Nov. 9, 2021, during Rainier War, a semiannual readiness exercise. SHARE: Download: Full Size (0.24 MB) Tags: Army, Training, Rainier War Credit: Army Capt. Ian Sandall VIRIN: 211109-A-KN550-432C.JPG Photo Gallery