History of Laos since 1945. North Vietnamese invasion of Laos, Laotian Civil War, Phetsarath Rattanavongsa, Battle of Lima Site 85, Royal Lao Army, Pathet Lao 54, Battle of Dien Bien Phu, Vang Pao, Operation Steel Tiger, Operation Tiger Hound, Operation Barrel Roll, Operation Commando Hunt, Operation Lam Son 719