Longstreet was criticized for the slow pace of his advance toward Knoxville in November and some of his troops began using the nickname "Peter the Slow" to describe him. At the Battle of Campbell's Station on November 16, the Federals evaded Longstreet's troops. This was due both to the poor performance of Law, who exposed his brigade to the enemy and thus ruined what was supposed to be a surprise attack, and Burnside's skillful retreat. The Confederates also dealt with muddy roads and a shortage of good supplies.