That is correct. The best defensive position in Lee's main line held by Hill's men suddenly pulled out of line ( after cutting down many yankees ) leaving a big void. Hordes of blue bellies went for it and Ol' Pete directed the artillery and gave them canister with help from Jebs bro in law, Cap or Col. Cooke, who hit the horde in flank, basically saving Lee's Army.
This Gent accepted leadership of Jackson’s Stonewall Brigade after he was mortally wounded at Chancellorsville.
Who was he and what unusual prior history did he have with Ol Jack, his former VMI professor?