Waxa loo dalacsiiyay brigadier general of volunteers laga bilaabo Sebtember 28, 1861, waxaana loo qoondeeyay ciidanka Potomac, halkaas oo uu ku amray guutada II Corps ee ololaha Peninsula. Wuxuu ka qayb qaatay dagaaladii Yorktown, Seven Pines
, Oak Grove, Gaines' Mill, Garnett's &amp; Golding's Farm, Savage's Station, Glendale, iyo Malvern Hill. Faransiiska ayaa ku ammaanmay warbixinnada rasmiga ah ee ficilladiisa iyo hoggaankiisa, waxaana loo dallacsiiyay inuu hoggaamiyo qeyb inta lagu gudajiray Ololaha Waqooyiga Virginia.