an Entity references as follows:
The Battle of Atbara also known as the Battle of the Atbara River took place during the Second Sudan War. Anglo-Egyptian forces defeated 15,000 Sudanese rebels, called Mahdists or Dervishes, on the banks of the River Atbara. The battle proved to be the turning point in the conquest of Sudan by a British and Egyptian coalition. The battle was celebrated by the Scottish poet William McGonagall.