Winter is a difficult time for any kind of vehicle, including tanks. Since the Russian winter is long, the USSR paid a lot of attention to how tanks put up with it. This applied in full to mobility in winter. Driving through deep snow banks was a mandatory part of testing every armoured vehicle starting with the MS-1. The MS-1 showed insufficient traction in snow, which is a part of the reason why the "Eagle's Claw" track was introduced. Winter tests of the Vickers Mk.E tank in the USSR were also a key factor in accepting the tank into production.
|T-34 tanks were often the only Soviet tanks that could move outside of roads in winter.
|The T-28 was the Red Army's most "snowgoing" tank, but not without a caveat.
|A-34 tank on trials. The tank demonstrated exceptional mobility in snow from the very beginning.
|The T-60's maximum snow clearance was evaluated as 20-50 cm depending on the section of the front, but everyone agreed its mobility in deep snow was the poorest.
|The T-26 and BT tank could drive through deeper snow than the T-60, but not much.
|The T-34 was a clear favorite when it came to driving in snow.
|The KV-1 was supposed to be the superior tank in deep snow, but this did not happen in practice.
|The Pz.Kpfw.I tank was the only German tank to go through a full set of winter trials in the USSR. In general its mobility in snow was about the same as the T-26, although the running gear became packed with snow.
|Report from the 20th Army for the same period. Soviet reconnaissance noticed that the German tanks can't drive in snow.
|The Pz.Kpfw.III lost to the T-34 across the board.
|The British Matilda tank could do well in snow, navigating through snow banks up to 60 cm deep. The presence of skirt armour was a drawback. If the snow packed behind it froze, the crew was in trouble.
|The Valentine was the best foreign tank when it came to driving in snow. It could drive through snow banks up to 80 cm deep. This tank was also the leader among foreign tanks in summer mobility trials.