True. You must be referring to organizations like the Arabisches Freiheitskorps. Take a look at the following :
http://www.eretzyisroel.org/~jkatz/bosnia.html
http://notendur.centrum.is/~snorrigb/mufti4.htm
Interesting material.
Thank you. I added your two links to a file I’m keeping on the subject for my own reference.