Very much so on Otto Dix. I believe they met after the war, either at an art class or gallery, but I can’t remember or immediately find a soruce for that.
There’s a lot of Ludwig Meidner influence too, especially the colourful lanscapes with multiple or contradictory vanishing points. He was an interesting guy too - his artwork was banned by the Nazis in the 30s, some of his work burned, and he fled before the holocaust started in earnest but his work from then and later is haunted by it.