Wouldn't that make him an enemy of his own state? It's not much different from dying. He cannot go back home, and see his family anymore after surrender. So, understandably with all the (mis) info he has been given, he fights hoping he'll come home.
He's a human after all, even after being misled by his "leader" into this stupid war.
It's just sad, for everyone involved, even if he is the bad guy.
I'm not saying surrender isn't a choice. I'm wondering if it's really an option for most of these Russian soldiers, if they knew better.
For centuries citizens of various countries hadn't a choice and had to fight russian oppressors except for russians themselves who always comply with all the shit they are told to do. This nation is beyond any rescue.