They were the primary guards for the herd of beef cattle which were "expropriated" by Wade Hampton during the Beef Steak raid a Petersburg, VA (actually in Prince George County...about 400 yards from where my son went to elementary school). The 1st DC Cavalry also had the ignominity of having been routed at the Staunton River Bridge as part of the the ill fated Wilson Kautz Raid of June 1864.
Soon thereafter a reporter asked Grant when he would take Petersburg. "Never," said the Union commander, "if our armies continue to supply him with beef cattle."
Lets just say they would not fit into the Wolverine brigade!!!