The December 1862 Battle of Fredericksburg was another Union debacle. Upon recovering from his foot wound, Hooker was briefly made commander of V Corps, but was then promoted to "Grand Division" command, with a command that consisted of both III and V Corps. Hooker derided Burnside's plan to assault the fortified heights behind the city, deeming them "preposterous". His Grand Division (particularly V Corps) suffered serious losses in fourteen futile assaults ordered by Burnside over Hooker's protests. Burnside followed up this battle with the humiliating Mud March in January and Hooker's criticism of his commander bordered on formal insubordination. He described Burnside as a "wretch ... of blundering sacrifice." Burnside planned a wholesale purge of his subordinates, including Hooker, and drafted an order for the president's approval. He stated that Hooker was "unfit to hold an important commission during a crisis like the present." But Lincoln's patience had again run out and he removed Burnside instead.