. . "U.S. Army Combat Arms Regimental System" . "U.S. Army Combat Arms Regimental System" . . . . . "Combat Arms Regimental Systems" . "Combat arms" . "Combat Arms Regimental System (CARS)" . . . . "combat arms" . "regimental combat arms system" . . "Combat Arms Regimental System" . "U.S. Army Combat Arms Regimental System (CARS)" .