Final answer:
Critics of General William Tecumseh Sherman in the North called him a 'butcher' due to the huge loss of life among his own troops.
Step-by-step explanation:
In the context of ongoing carnage and the immense loss of life among his troops, critics of General William Tecumseh Sherman in the North called him a "butcher". General Sherman was known for his brutal and ruthless tactics during the American Civil War, particularly during his march through Georgia and the Carolinas, where he aimed to destroy Confederate resources and bring the war to civilians.