Complex sentence: The 57th Indian Brigade (originally "3rd Quetta Brigade") was an infantry brigade of the British Indian Army that was active in the First World War and took part in the Third Anglo-Afghan War in 1919.
Split into simpler sentences: The 57th Indian Brigade (originally "3rd Quetta Brigade") was an infantry brigade of the British Indian Army that was active in the First World War. It took part in the Third Anglo-Afghan War in 1919.