To reunite both sides of the broken U.S. - the North (Union), and the South (Confederacy). He tried everything he could to preserve his country.
Nation.
The north and south
At the beginning of the Civil War President Lincoln stated that the war was being fought to preserve the Union.
Lincoln's plan to reunite the nation after the Civil War provided that if 10 percent of the people who voted in election swore allegiance to the Union then the seceded states could reenter the Union. Lincoln wanted to make it easy for the seceded states to rejoin the Union. Following the assassination of President Lincoln, President Johnson was also lenient concerning this issue. This placed him at odds with the Radical Republicans.
they fought in the civil war to serve their country.
Abraham Lincoln he fought for the slaves
Early on, Lincoln wanted to reunite the Union. Later, he added Emancipation as a goal.
The Civil War was still being fought when Lincoln delivered the address.
Abraham Lincoln, because he was on south side
Emancipation (for slaves) is what President Lincoln hoped and fought for during the Civil War.
The US Civil War was known as the War of Rebellion, and the men that fought it were often referred to as "Rebs" (for Rebels).
They Joined the Civil War and Fought in the war to help Abraham Lincoln