题目选项分析

The more cautious commanders of the Army of the Potomac, such as George McClellan and George Meade, chose to withdraw after costly battles, but commander Ulysses Grant's strategy was that he keep up pressure on Lee's Confederates even after losing a battle to them, and then occupying positions between Lee's army and Richmond to invite another open battle.

The more cautious commanders of the Army of the Potomac, such as George McClellan and George Meade, chose to withdraw after costly battles, but commander Ulysses Grant's strategy was to keep up pressure on Lee's Confederates even after losing a battle to them, and then to occupy positions between Lee's army and Richmond to invite another open battle.