If they're at least > 10 range away (because cover goes away within 10 range)
WAIT BUT WHERE YOU GET YOUR STATS TELL ME MAGICIAN
Yeah, true, that one I would tell him if he would ask for help instead of asking for changing the game he doesn't understand... In this case it would be better for him to learn the second part firsthand
Btw. I feel like I'm turning into katitof, what to do doc? Kappa
EDIT: Not to be a scumbag I'll add one more piece of advice: Those key buildings tend to have a side with only one window or even with none. Thanks to the magic of coh2 enemy soldiers in building have to shoot through windows to hit you, but your soldiers that are outside can kill them through wall just as fast as they would facing a window, no matter how strong the wall is. That means you can sit with your squad even without cover and no matter the range and easily win a fight. Obviously in one window scenario it won't work against mgs as they can use all firepower through one window. In that case you can circle around the building and kite the mg, or attack from 2 different directions. Axis and brit mgs take ages to change windows so it should be easy, other factions don't get the T0 mg so they can't rush it to the building.