Yes, Grimbjorn, there is a lot of evidence. The Germans got to the moon in 1942, using one of their Hannebu spacecraft. The Hannebu series were all designed after reverse-engineering the alien ship that crashed in the Black Forest in 1936. The Hannebu 1 could hold 12 crew members, more than enough to start carving out a base on the moon. It was a difficult task, but after three more Hannebus (including one larger Hannebu-2 craft) bringing workers and supplies landed, the Nazis had succeeded in establishing a small base. By the time the war ended there was a functioning base with a population in the hundreds. After the war was over, there was continued contact and missions between the moon base and the Nazi base in Neu Schwabenland. But that base is another story.