German Army Recruitment of foreigners

Just read My Memoirs by Alojz Voler. It is one Slovenian partisan's account which includes the escorting of Allied escapees PoWs on one leg of their flight to safety. Over 100 British, Australian, S African and Americans got away. It was the largest successful escape of PoWs in the West.

Anyway, Alojz Voler was Slovenian by birth. German law proscribed enlistment of foreigners into the Wehrmacht, but the SS could recruit them. However, in Voler's case he and his friends were drafted into the Reich's Arbeitdienst before being drafted into the German Army. I know that Poles were similarly forced into the German Army too.

So, if a conquered nation was incorporated into the Greater German Reich, it was OK to recruit them into the Army and if it was only an occupied nation (France, Lowlands, Baltic States, Ukrainians, Kazaks), they had to be recruited into the SS? Is that correct?

 

Upon further reflection, what of the Russians who entered the Wehrmacht and served in Normandy? There's the famous image of the Korean who was drafted into the Japanese Army, the captured by the Soviets and had an unpleasant stay in Siberia and subsquently drafted into the Red Army, where he was captured by the Germans and then into the Wehrmacht before being liberated by the Americans? He went back to Korea.