I’m posting videos of the G40 Invitational:
https://www.youtube.com/watch?v=wk9ooowEKQ0&lc=z22pw54h2sr4wbu1yacdp434fwhc4ndionykygiwloxw03c010c
can two allied countries- uk and us occupy the same country simultaniusly?
Yes they can. All three allies can be in the same space even, and they all defend together. So if the UK has 1 inf in karelia, US has 1 inf in karelia, and Russia has 1 inf in karelia, if germany attacks karelia they are attacking ALL units in that space, so in this case, 3 infantry.