UK army much smaller than american one, so the percentages are about the same, even though you have more...
most of the UK army serves as a peacekeeping force in countries where there's been civil war etc. very rarely is the british army used in actual war nowadays, that's the US's job...
i for one are glad they're coming home. i'm not an anti war guy, and support all the troops out there, but it's time our guys came home, it's not our war, it's america's. we're your allies, we helped out, but it's time for us to move on. time for the iraqis to take control of their own country, which is right.
as for vietnam voowho, that was entirely america, we here have no problem with commies, they can govern their country how they like as long as attacking us is not part of their plans...