There is a book called Waffen-SS im Einsatz (Waffen-SS in Action), published in West Germany in the 50s - this is pure Nazi apologia. The DDR in response published SS im Einsatz, which details the war crimes of the SS with documents and witness accounts in 600 pages. I have this book on my shelf.

The last chapter is titled: "The rehabilitation of the SS and its incorporation into the West German NATO armed forces" I started reading it and it gives us details as to what happed to Waffen-SS officers who stayed in West-Germany.

Kurt Meyer, an SS brigadeführer and commander of the 12th SS Panzer Division "Hitlerjugend", was sentenced to death in 1947 for the murder of Canadian prisoners of war. His sentence was later commuted to 20 years in prison, and he was released before the end of his sentence. He received compensation of 4,800 marks for his "suffered" imprisonment.

This was from the book.

Next I'm going to paraphrase wikipedia:

In early 1943, Meyer's reconnaissance battalion participated in the Third Battle of Kharkov. He reportedly ordered the destruction of a village during the fighting around Kharkov and the murder of all its inhabitants.

On 12 February, LSSAH troops had occupied two villages: Yefremovka and Semyonovka. Retreating Soviet forces had wounded two SS officers. In retaliation, LSSAH troops killed 872 men, women and children five days later; about 240 were burned alive in the church in Yefremovka.

The Ardenne Abbey massacre occurred during the Battle of Normandy at the Ardenne Abbey, a Premonstratensian monastery in Saint-Germain-la-Blanche-Herbe, near Caen, France. In June 1944, 20 Canadian soldiers were massacred in a garden at the abbey by members of the 12th SS Panzer Division Hitlerjugend over the course of several days and weeks. This was part of the Normandy Massacres, a series of scattered killings during which up to 156 Canadian prisoners of war were murdered by soldiers of the 12th SS Panzer Division during the Battle of Normandy. The perpetrators of the massacre, members of the 12th SS Panzer Division, were known for their fanaticism, the majority having been drawn from the Hitlerjugend or Hitler Youth.

Meyer petitioned for clemency in late 1950, offering to serve in a Canadian or United Nations military force if released. At the time, the new West German government was seeking the release of German war criminals incarcerated in Allied prisons, and the Canadian and other western Allied governments were looking to gain West German support for NATO to oppose possible Soviet aggression in Europe. The Canadian government was willing to let him return to a German prison, but not release him outright; he was transferred to a British military prison in Werl, West Germany, in 1951. Meyer was released from prison on 7 September 1954, after the Canadian government approved a reduction of his sentence to fourteen years. When he returned to Germany in 1951, he told a reporter that nationalism was past and that "a united Europe is now the only answer".

Regardless of his claims, Meyer always remained a covert, steadfast adherent of Nazism.

Meyer experienced poor health later in life, with heart and kidney disease and requiring the use of a cane. After a series of mild strokes, he died of a heart attack in Hagen, Westphalia, on 23 December 1961. Fifteen thousand people attended his funeral in Hagen, with the customary cushion-bearer carrying his medals in the cortege.