Well I really don't think you can even compare these two. I don't know any blunders at the top of my head Forrest committed. If he did, let me know. Custer, on the other hand, was neither reliable or a good strategist. At Little Bighorn, he not only split his forces to be cut down in detail, but he also was too over - confident to bring an important weapon: gatling guns. On the other hand, Forrest has done some of the most miraculous moves I have ever seen in warfare. He was also capable of commanding an entire corps, something we don't know Custer could've done. When I think of Forrest and a battle that represents his military career, I think of the Battle of Johnsonville. Union gunboats were coming down the Tennessee River to supply Sherman, but N.B. Forrest encountered them and literally had his men jump on the boats and slay the sailors. He captured a tin clad, and burnt millions of dollars of federal property to the TN river bed. On top of that, he cut Sherman's supply lines, which Sherman would otherwise sacrifice on his brilliant "March to the Sea." WW II general Rommel would study Forrest's tactics of mobile warfare, and use to great effect in the North African theatre to earn him the name "Desert Fox." Not to sound rude, but comparing these two is like comparing a Harvard professor to a elementary school substitute. Custer wasn't bad, but he was just not the man to depend on and made some very controversial decisions in his career.