Complex sentence: It was originally raised in 1887 as the 39th (Garhwal) Regiment of the Bengal Army, it became part of the British Indian Army, and after the Independence of India, the Indian Army.
Split into simpler sentences: It was originally raised in 1887 as the 39th (Garhwal) Regiment of the Bengal Army. It then became part of the British Indian Army, and after the Independence of India, it was incorporated into the Indian Army.