Hooker had started his entire army in…
June 1863 CE
On June 28, President Lincoln loses patience with him and relieves him of command, replacing him with V Corps commander, Major General George G. Meade.
After reviewing the positions of the army's corps with Hooker, Meade orders the army to advance into southern Pennsylvania in a wide front, with the intention of protecting Washington and Baltimore and finding Lee's army.
He also draws up plans to defend a line behind Pipe Creek in northern Maryland in case he cannot find suitable ground in Pennsylvania to fight a battle to his advantage.