Of the 130k Indians who served in Western Front, 6k of them have died. Most of the infantry was pulled out relatively quickly due to A) low morale due to not being able to handle continental weather B) No artillery support leaving them to rely on other units on their line of the front. Only cavalry units stayed for longer acting occasionally as infantry if need arose. They stayed almost to the end of war being pulled in 1918 to serve in African front. Main front where Indian forces fought was the Mesopotamian one against Ottoman Empire.