Not to spoil the party in here regarding Vietnam, but since we are speaking about Colonialism, also relevant is a forgotten piece of the 20th century that is the Portuguese Colonial War (1961-1976), a massive war effort by a small nation like Portugal, fighting in 3 different theaters of operations (Angola, Mozambique and Guinea). A lost cause, since the liberation movements where supported by both the communists (mainly USSR and Cuba) and the Americans.
A thread on this I believe would not get much traction, but nonetheless is a conflict worth of research and discussion.
A thread on this I believe would not get much traction, but nonetheless is a conflict worth of research and discussion.