Union Major General
Benjamin Butler, commanding the
Army of the James in Fort Monroe, learned that General
Robert E. Lee had detached a small portion of the
Army of Northern Virginia to North Carolina. Convinced that Lee had sent a larger detachment than he actually did, Butler was convinced that an attack by the
Army of the Potomac would force Lee to use troops from the defenses of Richmond to ward off the attack. Major General
John Sedgwick, temporarily commanding the Army of the Potomac, protested that Lee had detached fewer men than Butler thought and that the local roads and weather were too poor for a winter attack. However, both Secretary of War
Edwin M. Stanton and general-in-chief
Henry W. Halleck overruled his objections and ordered him to make the attack on February 6. The demonstration would take place near Morton's Ford, near a bend in the Rapidan River which formed a mile wide patch of land. Major General
Edward Johnson's division of Richard Ewell's
Second Corps had dug a series of entrenchments across the base of the bend. The Union II Corps, temporarily under the command of
John C. Caldwell due to the illness of
Gouverneur K. Warren, would move to Morton's Ford, with the I Corps marching to nearby Racoon Ford to the west and the cavalry crossing at Robertson's Ford. ==The battle==