In July, 1864, Commanding General Ulysses S. Grant, in preparation of the campaign to capture Richmond, stationed Sharpe and the BMI staff into his command headquarters, in order to ensure he would have the most up to date knowledge of the battlefield. Sharpe and BMI continued to serve Grant up until the Battle of Appomattox Court House, where they were responsible for paroling the former members of the Army of Northern Virginia, including Robert E. Lee himself.