Da misalin karfe 7 na yamma (19:00), yayin da faɗuwar rana ta fara faɗuwa, kuma hare-haren Confederate a kan ƙungiyar hagu da cibiyar suna raguwa, Ewell ya zaɓi ya fara babban harin sa.Ya aika da brigades uku (maza 4,700) daga sashin Manjo Janar Edward “Allegheny” Johnson zuwa tsallaka Rock Creek da kuma hauran tudun Culp na gabas.The Stonewall Brigade, karkashin Brig.An aike da Janar James A. Walker, da safiyar ranar don tantance bangaren hagu na Confederate zuwa gabashin Rock Creek.Kodayake Johnson ya umarci Walker ya shiga harin da yamma, bai iya yin haka ba yayin da Brigade na Stonewall ya barke tare da sojan doki na Union karkashin Brig.Janar David M. Gregg don sarrafa Brinkerhoff's Ridge.^[93]A gefen dama na Confederate, Brigade na Jones na Virginians suna da wurin da ya fi wahala don hayewa, mafi girman yanki na Culp's Hill.Yayin da suke ta ratsa cikin dazuzzuka da hawa dutsen dutsen, sun gigice saboda ƙarfin aikin nono na Ƙungiya a kan kullun.New York ta 60 ta yi nasarar doke tuhume-tuhumen nasu da sauƙi, wanda ya sami raunuka kaɗan.Wadanda suka jikkata sun yi yawa, ciki har da Janar Jones, wanda ya ji rauni kuma ya bar filin wasa.A tsakiyar, Nicholls's Louisiana brigade suna da irin wannan kwarewa ga Jones.Maharan da gaske ba a iya ganinsu a cikin duhu sai dai a takaice lokacin da suka yi harbi, amma ayyukan tsaro na da ban sha'awa, kuma rundunonin sojan New York na 78 da 102 sun samu 'yan tsiraru a fadan da ya dauki tsawon sa'o'i hudu ana yi.^[94]Rundunar Steuart na hagu sun mamaye aikin nono da babu kowa a kan ƙananan tudu kuma suka ji hanyarsu cikin duhu zuwa gefen dama na Greene.Masu tsaron Tarayyar sun jira a firgice, suna kallon yadda fitulun bindigogin Confederate ke kusantowa.Amma yayin da suke gabatowa, mutanen Greene sun ba da wuta mai bushewa.Tsarin mulki guda biyu a gefen hagu na Steuart, na 23 da na 10 na Virginia, sun zarce ayyukan 137th New York.Kamar fabled Maine 20th Maine na Kanar Joshua L. Chamberlain a kan Little Round Top da yammacin wannan rana, Col. David Ireland na New York na 137th ya sami kansa a kan iyakar iyakar sojojin Tarayyar, yana kare wani mummunan hari.A karkashin matsanancin matsin lamba, an tilasta wa 'yan New York su koma su mamaye wani rami mai zurfi wanda Greene ya ƙera yana fuskantar kudu.Da gaske sun tsaya tsayin daka kuma sun kare gefe, amma sun rasa kusan kashi uku na mutanensu wajen yin hakan.Saboda duhu da jaruntakar kare brigade na Greene, mazan Steuart ba su gane cewa kusan suna da damar isa ga babbar hanyar sadarwa ga rundunar sojojin, Baltimore Pike, kawai 600 yadi zuwa gabansu.Ireland da mutanensa sun hana babban bala'i daga fadawa sojojin Meade, ko da yake ba su taɓa samun tallan da abokan aikinsu daga Maine suka ji daɗi ba.^[95]A lokacin zafafan fadan, karar yaki ta kai ga kwamandan rundunar II Corps Manjo Janar Winfield Scott Hancock a kan Cemetery Ridge, wanda nan da nan ya aika da karin dakarun ajiye kaya.Pennsylvania ta 71st ta shigar da karar don taimakawa New York ta 137 a hannun dama na Greene.^[96]A lokacin da sauran XII Corps suka dawo a cikin daren wannan dare, sojojin da suka yi nasara sun mamaye wasu daga cikin layin tsaro na Tarayyar a kudu maso gabashin tudu, kusa da Spangler's Spring.Wannan ya haifar da rudani sosai yayin da sojojin kungiyar suka tuntube cikin duhu don gano sojojin abokan gaba a wuraren da suka bari.Janar Williams ba ya so ya ci gaba da wannan rikice-rikicen fada, don haka ya umarci mutanensa su mamaye filin da ke gaban dazuzzuka su jira hasken rana.Yayin da Brigade na Steuart ya ci gaba da kasancewa mai rauni a kan ƙananan tudu, sauran brigades guda biyu na Johnson an janye su daga tudu, kuma su jira hasken rana.Mutanen Geary sun dawo don ƙarfafa Greene.Bangarorin biyu sun shirya kai farmaki da asuba.^[97]