Muslims who fought for the Nazi SS.
http://tinyurl.com/mvldn3
There will be some who will wish you hadn't brought this up.
Regarding the contribution made by commonwealth troops during WW1 & WW2 being celebrated.
They often are Hindus, Sikhs, Gurkha, Jamaica. along with many other nations.troops
Both wars were World Wars, and these troops wasn't necessary fighting just for the British, they were fighting also to protect their home land or free their homeland, whichever was the case.
/// How comes none of us knows about the "2.5million men and women who came over to do their bit in World War II"? ///
Just speak for yourself, I myself know plenty about them, and if you, instead of making racist remarks, was also to spend your time reading the numerous books or viewing the numerous DVDs on the subject, you may also be made aware of them.