Edwin "Bull Head" Sumner
http://en.wikipedia.org/wiki/Edwin_Vose_Sumner
Sumner commanded the Federal II Corps during the 1862 campaigns. He also commanded one of the "Grand Divisions" (2 infantry corps and a cavalry division) at Fredricksburg.
Sumner was one of the oldest commanders in the Union army, and seems to have used sledgehammer tactics at Antietam and Fredricksburg that resulted in exceedingly high losses...I'm thinking statistics such as 3/2/2 might be appropriate. Any thoughts?