Seems like a pretty standard report. The 296th Infantry Division spotted three new American tanks being used by the Soviets. Let's take a look at these three new tanks.
No mystery here, those are the Stuart (Soviet designation M3 light) and Lee (M3 medium). Seems pretty normal so far, as the Soviets started receiving Lees and Stuarts in 1942. What's the third tank, you may ask? A reasonable guess would be the M4 Sherman, but reality isn't quite as reasonable.
It's a T-60! Sorry, comrade Astrov, looks like your work goes unappreciated.