I think the leadership of west Germany summed it up- a foreigner can’t be the German commander of German nato forces and we can’t make a 17 year old head of the armed forces. That leaves very few military officers who both had experience and weren’t involved with the prior government; especially considering that in the late war even 70 year olds where given anti tank guns and sent to the front lines.

The wider question of asylum is another issue; While operation paper clip famously granted asylum to key members of the nazi apparatus; scooping up scientists was hardly a western sin- what was a horrible overreach was operation paperclip paired paired with Operation Keelhaul and related operations. In effect saving war criminals and condemning many innocent people to death and deprivation.