How many Sikhs joined the British Indian army?

During World War I, approximately 1.5 million Sikhs enlisted in the British Indian Army, making significant contributions to the war effort. Their service continued during World War II, with around 1.3 million Sikhs serving in various capacities. The Sikh regiments were noted for their bravery and played a crucial role in multiple campaigns. Overall, Sikhs have a long history of service in the British Indian Army, reflecting their martial tradition and loyalty.