Complex sentence: In 1923 the new 1st Battalion was among the first Indian Army units selected for Indianisation Nationalisation of the Indian Army, 1885-1947 By Gautam Sharma.p235 which attempted to ensure that all the junior officers would be Indians trained at Sandhurst.
Split into simpler sentences: In 1923 the new 1st Battalion was among the first Indian Army units selected for Indianisation. Which attempted to ensure that all the junior officers would be Indians trained at Sandhurst.