Ranar farko ta Yaƙin Gettysburg ta fara ne a matsayin haɗin kai tsakanin rukunin sojojin Arewacin Virginia da ke ƙarƙashin Janar Janar Robert E. Lee da Sojojin Potomac a ƙarƙashin Union Maj. Gen. George G. Meade.Ba da daɗewa ba ya ƙara zama babban yaƙin da ya ƙare a cikin ƙima da nasara da sojojin Tarayyar da ke komawa babban filin kudu na Gettysburg, Pennsylvania.An dai gwabza fadan na ranar farko ne a matakai uku yayin da mayaka ke ci gaba da isa filin daga.Da safe, brigades biyu na Confederate Major Gen. Henry Heth's division (na Lt. Gen. AP Hill's Third Corps) sun jinkirta daga hawan doki na Union karkashin Brig.Janar John Buford.Yayin da dakarun sojojin suka isa karkashin Manjo Janar John F. Reynolds na Union I Corps, an fatattaki 'yan tawayen da suka kai hari kan Chambersburg Pike, kodayake an kashe Janar Reynolds.Da yammacin rana, Union XI Corps, wanda Manjo Janar Oliver Otis Howard ya umarta, ya iso, kuma matsayin ƙungiyar yana cikin da'ira daga yamma zuwa arewacin garin.Rundunar ta Confederate Second Corps karkashin Laftanar Janar Richard S. Ewell ta fara wani gagarumin farmaki daga arewa, inda bangaren Manjo Janar Robert E. Rodes suka farma daga Oak Hill da Maj. Janar Jubal A. Early Division suka kai farmaki a fagagen da ke buda-baki. arewacin garin.Layukan ƙungiyar gabaɗaya suna riƙe da matsanancin matsin lamba, kodayake ƙwararrun a Barlow's Knoll ya mamaye.Kashi na uku na yakin ya zo ne a daidai lokacin da Rodes ya sake sabunta hare-harensa daga arewa kuma Heth ya dawo tare da daukacin rundunarsa daga yamma, tare da bangaren Manjo Janar W. Dorsey Pender.Yaƙi mai tsanani a cikin Herbst's Woods (kusa da Makarantar Tauhidi ta Lutheran) da kuma kan Oak Ridge a ƙarshe ya sa layin Union ya rushe.Wasu daga cikin Gwamnatin Tarayya sun gudanar da wani artabu na janyewa a cikin garin, inda suka yi hasarar rayuka da asarar fursunoni da dama;wasu kawai suka ja da baya.Sun dauki matsayi mai kyau na tsaro a Dutsen Cemetery kuma sun jira ƙarin hare-hare.Duk da umarni na hankali daga Robert E. Lee don ɗaukar matsayi "idan za'a iya," Richard Ewell ya zaɓi kada ya kai hari.Masana tarihi sun yi ta muhawara tun a kan yadda yaƙin zai iya ƙarewa daban-daban idan ya ga ya dace a yi hakan.