where did you get that info from? part of the process of the destruction of the colonization myth of whites being superior was seeing them kill themselves while serving on the western front. Before that colonists seemed almost invincible to less technologically advanced people.
I know quite a bit about the Great War.
In 1915 they put Indian divisions on the Western Front but denied them leave because they didn't want brown men sleeping with white French prostitutes. They were quickly removed from the Western Front and sent to the Middle East and Africa.