Deport him to Ukraine.
Give him and his bro new jobs fertilizing a corn field. For ethanol, of course...
He is not Benedict Arnold. There is a Soviet comedy from 1956 called ‘Max Perepelitsa’ about a crooked Ukrainian conscript in the military. It somehow downplays their crooked nature and mixed loyalties making it all into a joke but that is it. Instead Max of course is a better character than Windman at the end but that’s a movie after all.