So I looked though "The Last Battle" by Stephen Harding, which is perhaps the most direct treatment of the battle, and the answer, I'm sorry to say, is thoroughly unsatisfying. After the conclusion of the fight, the surviving members of the Wehrmacht were sent into captivity as POWs. The only member of the German forces who assisted in the defense that Harding offers any coda for is Kurt-Siegried Schrader - a member of the Waffen-SS, not the Wehrmacht - who was provided with a signed letter by the former prisoners attesting to his assistance in their defense, which may or may not have helped him secure release in 1947. He eventually secured a job with the state, and died in "the mid-1990s." The Wehrmacht apparently did not receive similar chits, but being only enlisted men, and not Waffen-SS at that, they would have had less need of such a protection. In any case though, Harding does not record what happened to them following their march into captivity, but they would have been released over the next few years, along with the other millions of German captives rounded up with the end of the war.