It's been a while but from what I recall:

• Pacing felt slow
• The MC's grandfather was a war criminal (fought in Korea)
• Very much played into the idea that the US and the Nazis were meaningfully ideologically opposed
• Some historical inconsistencies (IIRC they mention "GIs" liberating Auschwitz, which would imply it was the americans)
• Copaganda with the "good" FBI agent
• "If you kill a nazi you're just as bad as the nazis!"