Cambodia and Lao--these neighboring countries were the path for the North Vietnamese to reach the southern parts of Vietnam more quickly.
Cambodia and Laos would be the located of the HoChi Minh Trail which was the supply line from the North to the South. Many parts of the trail were underground and difficult to get rid of. The US resorted to air strikes of the two countries which was controversial because they were technically neutral areas.
My position on the draft is in favor, because I support the idea that military service should be voluntary.
Military service should be voluntary because when it becomes a draft, it ends up violating basic civil rights. For example, some people are radical pacifists, and their pacifism is an intimate part of who they are. If these people were drafted, their right to believe in something would be violated.
Voluntary service is without a doubt more just than required military service. Voluntary service does not violate any civil rights, and it may even result in a better military because only those who want to be part of the armed forces end up being recruited.