Bilowgii waxaa loo qoondeeyay I Corps, bishii Juun 1862, qeybinta waxaa loo wareejiyay Virginia Peninsula halkaas oo ay ugu adeegtay V Corps ee Ciidanka Potomac inta lagu gudajiray Ololaha Peninsula. Qeybta ayaa markaa ku soo laabatay qeybteedii hore (oo waqtigaas loo magacaabay III Corps ee Ciidanka Virginia) intii lagu jiray Ololaha Bull Run ee Labaad. Qeybtii hooyo ee qaybta ayaa dib u bilaabay magacaabistii I Corps wax yar ka hor ololihii Antietam markii ay dib ugu biireen Ciidanka Potomac. Qaybta waxay ka qayb qaadatay dagaalladii South Mountain, Antietam, iyo Fredericksburg, gaar ahaan waxay ku kala soocday Fredericksburg, halkaas oo ay ku dhex martay khadadka Confederate. Inta udhaxeysa Fredericksburg iyo Gettysburg, qeybta waxay qeyb ka ahayd XXII Corps oo loo qoondeeyay Washington, D.C. Waxay qayb ka ahayd V Corps mar kale Dagaalkii Gettysburg, halkaas oo ay ku kala duwan tahay July 2, 1863, oo ku dagaallameysa agagaarka Little Round Top. Hal guuto ayaa ciidamada Confederate ka eryay dhaadhacyada galbeed ee Little Round Top dib ugu noqdeen Wheatfield. Crawford, Pennsylvania Reserves waxay sii wadeen inay la dagaallamaan Ciidanka Potomac ilaa wax yar ka hor Dagaalkii Bethesda Church ama Dagaalkii Totopotomoy Creek
, markii ay ragga saddexdii sano ee ciidanku dhamaadeen.