I made the mistake of balking at some particularly unhinged Ukraine/Russia rhetoric offline yesterday and got called a vatnik, a tankie, a Russia lover and I was even suspected of being pro-Israel and apparently a nazbol Aimee Therese follower or something
I'm not even invested in this shit, I just find the insane saber-rattling and warmongering unsettling 
When someone tells you Putler's going to invade Estonia, Poland and Finland for Lebensraum next if he's not stopped in Ukraine, just nod your head solemnly
infantry is absolutely dominant without a master on the enemy artillery, you get some boys ensconced in a built up area or better yet a sizable forest, they'll eat the enemy's lunch for an entire match. key is getting them to the good positions quickly, replenishing them when they take casualties, and utilizing the air-dropped infantry to expand your intel & area control. once it gets going infantry is fairly poor on the offense, but ideally you're getting enough points from dug-in infantry repelling the enemy to call in support for when you actually need to push
technically this is multiplayer advice but the campaign missions play the same except there aren't point discounts/penalties based in role iirc