<prompt> Bhala okuqhubekayo kwalesi sigaba - Isibhamu sokuqala sesitimela esasisetshenziswa empini kwakuyisibhamu sasolwandle i-Brooke esingamakhilogremu angu-32 esifakwe enqoleni eyisicaba futhi esivikelwe yi-casemate eshelelayo yensimbi yesitimela. NgoJuni 29, 1862, uRobert E. Lee wathumela isibhamu ngesitimela phezu komugqa weRichmond neYork River kamuva owaba yingxenye yeSouthern Railway futhi wasisebenzisa eMpini yeSiteshi seSavage  <response>: ukuphazamisa izinhlelo zikaJenene George McClellan zemisebenzi yokuvimbezela iRichmond ngesikhathi i-Union iqhubekela phambili enhlonhlweni. 