Jubal Early's Movement Map on Washington may be found at:

https://www.essentialcivilwarcurriculum.com/jubal-earlys-1864-raid-on-washington.html

June 30 Regiment locateded at Bunker Hill, Va.
July 5, Early crosses the Potomac River at Harper's Ferry and enters Maryland
July 6 Private. Gorom, Returned to duty
July 7
July 9
July 9 Monocacy
July 10
July 11 Ft. Stevens
July 12 DC
Aug. 30 Private. Gorom Present with Regiment - date of return not available

I would assume that the Army manintained an office to assist soldiers in returning to their units, providing
transportation in some cases, food, clothing, etc.