During ww2 many Ukrainians saw Germany as a way to break free from the Soviet Union. So many Ukrainians joined up. To me that looks like, the enemy of my enemy is my friend.
Back in the '90s, I spent a drunken evening in the company of a friend's elderly father, who came to Australia as a refugee after WWII. He was a Ukrainian, and was captured by the British in Germany in the last weeks of the war in Europe.
He had a lot of romantic reminiscences about his youth in Ukraine, and how much the local girls loved a man in uniform who was fighting to defend his homeland against Stalin.
He wasn't a Nazi, or even particularly anti-communist; He just wanted an adventure and to do his bit to liberate Ukraine from Stalin, so when the Soviets were pushed out, and the Germans gave the young men in his village the "choice" of joining their army or being shot as communists, he joined up.
He was embarrassed, but unrepentant, about having ended up fighting for the Germans. It wasn't as though he'd had any real choice, and he'd mostly been fighting Soviet forces, which he certainly didn't object to. He was absolutely ecstatic about the (then recent) collapse of the USSR, which he still hated some five decades later.
None of his unit were Nazis. They were given lots of political instruction by Nazis, but they didn't care much about it; Politics is a priority for political officers, but soldiers ignore them as much as possible (and of course, that was true on both sides of the Eastern Front). He saw a lot of "very bad things". He didn't draw any distinction between those motivated by politics, and those motivated by ordinary wartime viciousness; he just kept his head down and hoped not to be ordered to do too many things he would later feel shame over.
I don't think his experience was radically different from the experience of young men at war in any era; Certainly it sounded a lot like the way Vietnam veterans describe their time as soldiers. Lots of boredom, lots of asinine orders and irrelevant training in stuff nobody cared about, punctuated with occasional fun adventures, and occasional pants-shitting terror.