How did Lincoln motivate the audience to continue the war?

In the North, many soldiers fought because the believed slavery was wrong, but more fought because they needed the money or were drafted. In the South, men were also drafted, but most fought to protect their families and homes. To them, the Yankees were trying to take over their homeland, and for most Confederates, that was enough to keep them going. There are also stories of men carrying pictures of their families with them, which suggests that they looked to these for comfort and encouragement.