<prompt> Bhala okuqhubekayo kwalesi sigaba - Izimpi Zezinsuku Eziyisikhombisa zaqala ngokuhlaselwa kwe-Union eMpini encane ye-Oak Grove ngoJuni 25, 1862, kodwa uMcClellan washeshe walahlekelwa yisinyathelo njengoba uLee eqala uchungechunge lokuhlaselwa eBeaver Dam Creek Mechanicsville ngoJuni 26, iGainess Mill ngoJuni 27, izenzo ezincane eGarnetts naseGoldings Farm ngoJuni 27 noJuni 28, nokuhlaselwa kwe-Union ngemuva kwesiteshi saseSavage  <response>: ngoJuni 29. I-Army of the Potomac kaMcClellan yaqhubeka nokuhlehla kwayo maqondana nokuphepha kweHarrisons Landing eMfuleni iJames. 