His superiors and the union troops he usually whipped were impressed. His footsore soldiers weren't so fond of the whole deal.
An excellent example! As I recall from reading, he marched his men over 600 miles in 12 days fighting several large battles and about 40 skirmishes along the way. He motivated his men by shooting stragglers. There's a famous anecdote where his soldiers with bleeding feet asked for shoes and he told them that if they wanted shoes they should kill a yankee. Back on subject, it's a clear example of a large group of humans averaging over 50 miles a day for a moderately extended period of time with the only real problem being sore feet for the ones who were out of shape.