Various names have been applied what is known as the Vietnam War. These have shifted over time, although Vietnam War is the most commonly used title in English. It has been variously called the Second Indochina War, the Vietnam Conflict, the Vietnam War, and, directly translated in Vietnamese, Chiến tranh Việt Nam (The Vietnam War), In Vietnam it is commonly known as Chiến tranh Mỹ (The American War), or more formally as Kháng chiến chống Mỹ (Resistance War against America).