Gettysburg Campaign. Confederate General Albert G. Jenkins and his staff occupied this house, June 28-30, 1863. His brigade, a part of General Ewell's Corps, had entered Mechanicsburg to reconnoiter the approaches to Harrisburg with a view toward a June 30 attack. The troops withdrew from here on the 30th, however, having been ordered to Gettysburg in advance of the battle there. This house, owned at that time by John Rupp, was built in 1787 by his grandfather, Jonas Rupp.