How does Lincoln change the message to grant?

In his correspondence with General Ulysses S. Grant, Abraham Lincoln often emphasized the importance of unity and a clear strategy for victory during the Civil War. Lincoln encouraged Grant to pursue aggressive tactics while also advocating for a focus on maintaining morale among the troops and the general populace. He sought to blend military objectives with political considerations, reinforcing the idea that the war was not just about defeating the Confederacy but also about preserving the Union and promoting freedom. This dual focus helped shape Grant's approach to leadership and military strategy throughout the conflict.