you are right but kissing each other to girls can be "explained" by "sisterhood" by queer women. So that they can save themselves from persecution. it is a common tactic at that time. Also kissing between sisters themselves are more common at that time period compared to today. it is shitty that queer women had to hide themselves so much but that's the only way.Wait, wouldn't it have been a really bad idea for them to kiss in front of the others? Particularly when they have a NKVD commissar attached to the unit specifically to surveil them? (Yes, I know she wasn't present, but it seems like an awfully big risk in front of the guys; even if they weren't homophobes, they might discuss it while she IS present)