Coh3 Vietnam/Cold war. Confirmed by Abraham Lincoln on the internet.
When I imagine Vietnam, I always imagine jungle and such. I can't really imagine that in CoH play style. I think it could be done. But than it wouldn't look as a jungle but more like fields or something. And than It wouldn't be authentic... less sex appeal.
Personally I don't like maps which doesn't look real. For me such map is Nexus 1v1 - it's a good map but for me it looks way to scripted to be "balanced" from both sides and it feels like it's just mirrored.
But I think that's probably just me.