Red Army T-35 heavy tanks 

It look really good but in battle it wasn't so great

Specifically the grim darkness of the far future.

why was it obsolete in 30+?

@@MadGeek17 Because according to wikipedia it is max armour thickness was 30mm? A panzer 4 had 80mm on the front. Probably better weapons too. Just guessing here.

U- 552 either you or Wikipedia is wrong. I wrote what wiki said. en.m.wikipedia.org/wiki/Panzer_IV

@@zedd81 You're looking at a G model that's around 41 the other guy is talking about the early Panzer IVs like the E,C,or F1

Sebastian Čizmarov I’m looking at the wiki. And according to that it’s a H and 43. Good guess. You sure know your tanks

Alexander Wilson no it’s the Russian version of the vickers a1e1 independent

Those are late-series T-35 turrets. Similar conical turrets were installed on late-series T-28s

Not much

Very effective in the 1920s - early to mid 1930s battle situations

This is a late version of the T-35. Of the 59 tanks of this type, the last 10 were equipped with sloped armor.