Yan Liang
As suggested by his advisor Cheng Yu, Cao Cao then hesitantly summoned Guan Yu, fearing that the latter would leave him once he had repaid his kindness. The next day, as Yan Liang's army lined up on the battlefield, Guan Yu sat with Cao Cao on a hilltop and looked down. From afar he saw Yan Liang under the army standard. Leaping onto his steed, the Red Hare, Guan Yu galloped straight into the enemy ranks, which broke before him like waves before a swift vessel. Before Yan Liang could fight back, he was struck down by Guan Yu. Guan severed Yan Liang's head, tied it to the neck of his steed, and rode back unhindered. Yan Liang's men became demoralized and fell into chaos, providing an opportunity for Cao Cao to attack. The battle of Boma was thus won with uncountable enemy dead and much plundering of supplies.