I think they go with "US citizen"

you might have a point, with Seoul switching hands 4 times i belief that could at least give birth to some interesting platoon sized scenario's

Americans from an Anglo-Canadian perspective. We never consider ourselves a citizen of the Americas except in esoteric, academic scenarios. Latin America might have different views, however. If you really want to avoid all controversies, go with the classic "citizens of the US(A)" as Titanium said.

there was some very good air and tank battles in that conflict.
far as the strategy games on it i would rather like ones where it wasnt scripted historically. with the same objectives and places in scenerios as the real battles/war was at the time.
a player would probably do something different even if they are familiar with its history or not.
for instance, at the time frame when the battle of Kursk was fought, i would not have attacked if i was playing the german side. i would have months earlier.
and i also like sometimes like to redue the scenerio and play the otherside.
there is just so much on ww2 and would like something not only different but, interesting.
i also dont see much on the arab-israel conflicts either.

https://en.wikipedia.org/wiki/Police_action#Examples_of_%22police_actions%22

Ah, soon after I posted that it actually dawned on me that obviously it must have been directed towards the US/UN intervention. At the time they wanted to avoid triggering the Soviets and Chinese.

The proper nomenclature is American lol, good luck finding anyone in thee USA who calls themselves a 'US Citizen".

Lol? And the official name of my country is Commonwealth of Australia, do you call us "Commonwealth citizen", do you call yourself a "Republic citizen"? No you'd call yourself a Slovene right?

Look, the terms may be interchangable if the context is simple. If not, then the official line takes precedent. The fact that we can say that someone is an American and people will very likely know exactly what you mean is down to the spread of the American culture.
If, for instance, California secedes from the union/federation, do they cease to be Americans or what?

Oh, I like this one. Some poor sods have this exact problem :D

But what if American't???

Not everyone has the same ability to concentrate.