The ancient war god Assur was a Mesopotamian deity who was worshipped in the city of Assur, which is now located in modern-day Iraq. He was believed to be the protector of the city and its people, and was often depicted as a warrior with a bow and arrow. He was also associated with the sun god Shamash, and was sometimes referred to as the 'Lord of the Universe'. Assur was an important figure in Mesopotamian mythology and was venerated by many cultures throughout the region.