I removed the "russo-ukrainian_war" tag as other than some more modern equipment they do seem to be fighting nazis, as you can see a swastika banner just cut off on the left side of the image.
There's a whole subgenre of Russian sci-fi that focuses on the modern Russian military getting isekai'd to WWII. This picture seems to loosely based on those.
Added 6+others. We cannot simply assume those comrades' sexes due to lack of facial features while wearing combat uniform from a distance. The machine gun also looks like the NSV. The tank crew is based on a photograph.