The Red Army received 918 of the 1,084 Matildas sent to the USSR. The Soviet Matildas saw action in high tide of the Battle of Moscow and became fairly common during 1942. Unsurprisingly, the tank was found to be too slow and unreliable. Crews often complained that snow and dirt were accumulating behind the "skirt" panels, clogging the suspension. The slowness and heavy armour made them comparable to the Red Army's KV-1 heavy tanks, but the Matilda had nowhere near the firepower of the KV.