During the siege of Yorktown the corps was at its maximum, the morning reports of April 30 showing an aggregate of 39,710, with 64 pieces of light artillery, and 34,633 reported as ``present for duty''. But this aggregate was maintained only briefly, as Porter's Division was taken away soon after to form part of the newly organized V Corps. Hamilton was relieved on April 30, and General Philip Kearny took his place, Hamilton assuming a division command in the Army of the Mississippi.
Hamilton
Philip Kearny