Okay for the new players that may need help deciding a nation or want to know more about those nations this is some info to help.
So Italy the nation i am familiar with. Italy has mainly light, mediums, and tank destroyers with only 1 heavy i believe. This makes most tank good for flanking. Flanking is necessary if you want to live because most tanks can be killed with a 7.62 or 12.7mm (.50 cal). These are some vehicles i recommend: Semovente 90/53 M41M (90mm with 347 grams of explosive filler in APCBC), M55 (203mm howitzer), M44 (fast, light, 155mm gun), StuG 3( German TD), Semovente da 47/32 L40 (47mm casemate TD), M11/39 ( it has a decent gun), AS 47/32, AUBL/74 (90mm light tank), R3 T20 (fast light decent gun), Leopard 40/70 (powerful 40mm gun), and FIAT 6614 can be fun if the HEAT shell works. Pros of Italy: Light, fast, fun and goofy vehicles ( in my opinion). Con of Italy: basically no vehicles have armor, low tier reserve vehicles can be a bit tricky, bad cannons on some vehicles, lots of open tops (CAS can be a nightmare), and a lot of vehicles that arent from America dont get roof mounted MG’s or the MG is small like 7.62 also small MG magazine sizes.
Well overall Italy had taught me how to play the game I recommend it for new players that want to learn without relying on armor.