Forrest became well known for his early use of maneuver tactics as applied to a mobile horse cavalry deployment. He grasped the doctrines of mobile warfare that would eventually become prevalent in the 20th century. Paramount in his strategy was fast movement, even if it meant pushing his horses at a killing pace, to constantly harass the enemy during raids by disrupting their supply trains and communications with the destruction of railroad tracks and the cutting of telegraph lines, as he wheeled around his opponent's flank. The Civil War scholar Bruce Catton writes: