This is the family history of three generations of Germans. The author’s grandparents were young during WWII; one grandfather fought in the French Resistance, the other seems to have been a lukewarm Fascist, but both ended up being inspired by the promise of the new socialist East Germany that was going to rise out of the ruins of the war. Then his parents grew up as products of the GDR, and he was a young man when the Berlin Wall came down.
He’s got plenty of good material, and it’s well-written*, so if it sounds like the kind of thing you might like, you’ll probably like it.
* Apart from some slightly clunky tense shifts; he opens chapters in the past tense to establish the scene then switches to the present tense for the bulk of the text. Maybe it works better in German.