The Michigan Brigade, sometimes called the Wolverines, the Michigan Cavalry Brigade or Custer's Brigade, was a brigade of cavalry in the volunteer Union Army during the latter half of the American Civil War. Composed primarily of the 1st Michigan Cavalry, 5th Michigan Cavalry, 6th Michigan Cavalry and 7th Michigan Cavalry, the Michigan Brigade fought in every major campaign of the Army of the Potomac from the Battle of Gettysburg in July 1863 to the Confederate surrender at Appomattox Court House in April 1865.

The Overland Campaign, also known as Grant's Overland Campaign and the Wilderness Campaign, was a series of battles fought in Virginia during May and June 1864, towards the end of the American Civil War. Lt. Gen. Ulysses S. Grant, general-in-chief of all Union armies, directed the actions of the Army of the Potomac, commanded by Maj. Gen. George G. Meade, and other forces against Confederate Gen. Robert E. Lee's Army of Northern Virginia. Although Grant suffered severe losses during the campaign, it was a strategic Union victory. It inflicted proportionately higher losses on Lee's army and maneuvered it into a siege at Richmond and Petersburg, Virginia, in just over eight weeks.