Because they were tho most prominent military leaders of the Civil War.
General Grant General Grant General Grant
General Grant was the soldier that received the surrender of General Lee.
Abe Lincoln and Ulysses S. Grant
Grant and Sherman
Lee attended the United States Military Academy at West Point.
Ulysses S Grant was a famous general who later became President; so yes, he did military service.
General Grant was the commander
At the very start, General Winfield Scott; afterwords General US Grant
The political and military leaders of the Union during the American Civil War were Abraham Lincoln, Ulysses S. Grant, and William T. Sherman. Also on the list are Edwin M. Stanton, David Farragut, and David D. Porter, among others.
U.S. Grant- union Robert E. Lee-confederate
North: General Ulysses S. Grant South: General Robert E. Lee
Unconditional Surrender Grant