Most likely the Germans promised them “independence and lands” ( former russian:)) in furture. But who know , the islamic tatars were very warlike nation ( like Chechens or Ingushs) so i suppose , essential part of them were going to join the Wermacht/SS for the personal profit.
As for “hated communism”, hmmmn i don’t think the Tatars were specialy oppressed or suppressed pre-war nation in USSR compared , say to native Russians. Moreover, this is well known fact , the bolshevics were multinational who hated all sort of ethnic nationalism ( russian nationalism - especialy), and the Russian suffered even more then the other nation of USSR.BTW first they have made after coming to power- destroyed almost all of the Ortodoxy russian churches.
The National elites even owned the special previligies in SOviet russia, compared to “senior brother”.
I understand why the RLA would fight the Soviets, but I just don’t get the Tartars or the other Slavic & Muslim units…
i think the answer isn’t such a hard:)
There a lot of special sort of peoples who ready to colloborate with any inviders , who will promise them ( or just hint to promise) a moon or fortune when the “War will have been over”.
Such sort of people were ready to cooperate with any inviders, but at the same time- would have betrayed them first , when the situation will be critical.
Add to it that the Race-hate propogand , that was in basis of “new order”, simply deceived the millions of peoples for the first time.
But it can’t be endless.
Even the such devoited friends of Germany as Ukrainian nationalists( who were so glad and happy in 1941 when Wehrmacht has “liberated” Ukraine:)), in 1943 openly declared the war on GErmnas occupation troops.As well many SLavic colloborators , who did not soil their reputation by war crimes, voluntary surrendered to Red Army or turned their weapon against former GErmans comrides.
Beeing deceived by their own propogand, believing that the colloborators “fought agains communism for Europe together with GErmany”, the GErmans themself has been bitter distressed by the unprincipled peoples from all of occuped nations , who in fact, just waiting the moment to stick the knife at GErmans back.