Up to 4 million fought for the Allies in WW1, and up to 1 million in WW2
In contrast up to 100,000 Muslims fought for Nazi Germany.
Maybe it was because UK broke their word with the united Arabs to give them independence (Lawrence of Arabia: Later Life: Disillusioned by post-war political settlements that denied full Arab independence, he wrote his memoirs—including Seven Pillars of Wisdom ) that there were fewer fighting for the Allies in WW2
About 25% of the British Merchant Navy were Muslim.
How easily a country forgets its indebtedness to foreigners.