A firm belief that one is doing the right thing is incredibly protective of mental health in war.

Ukrainian drone pilots have few doubts about what future they're working towards and what one they're preventing when they kill Russian soldiers.

US soldiers coming home from Iraq 2 (or Vietnam) don't have anywhere near that ideological buffer.

The operators know they are in danger themselves, most notably from gliding bombs on their bunkers, so it's a clear him-or-me, makes things simpler. Also: Bucha.

ps. do you to watch all these videos? how is it affecting you?