I have arrived in Washington, but I will stay here only a few days before establishing my headquarters in Culpeper VA with the Army of the Potomac. I was asked by Secretary Stanton to sit for a portrait at the study of photographer Mathew Brady. While his assistant was adjusting a skylight, it shattered, causing glass to fall around me. I took little notice of it, though the Secretary was much disturbed.
While in Washington, I discussed with Gen. Halleck the lack of performance thus far of the cavalry of the Army of the Potomac. I have been impressed with the performance of Philip Sheridan with the Army of the Cumberland and directed Gen. Halleck to transfer him here. He sent the following telegram to Chattanooga,
MARCH 23, 1864.
MAJOR-GENERAL THOMAS, Chattanooga
Lieutenant-General Grant directs that Major-General Sheridan immediately repair to Washington and report to the Adjutant-General of the Army.
H. W. HALLECK,
Ulysses S Grant, Triumph Over Adversity, Brooks Simpson, p 266-7
The Memoirs of General Sheridan, I 339