Not surprisingly, he is dead.
General US Grant was nicknamed "unconditional surrender" Grant
General US Grant's first assignment in the US Civil War was in Missouri. In September of 1861 Grant took command of the Southeast Missouri District.
When General US Grant was set to begin the Overland campaign in 1864, he needed a reliable general to head the cavalry division of the Army of the Potomac. Grant chose General Philip Sheridan for this position.
Unconditional Surrender.
general of the Army
General Robert E. Lee
Union General US Grant was basically placed in charge of the Western Theater of the US Civil War. He, as did Lincoln, lost all faith in General Rosencrans. He therefore replaced Rosencrans with General George H. Thomas.
Almost immediately after the Battle of Shiloh, Grant's commanding officer, General Halleck left his headquarters in St. Louis and took charge of Grant's army. Grant wrote to his wife " General Halleck is here and I am truly glad of it".
General Sherman wrote about his reasons of concern for his friend US Grant at the Siege of Vicksburg. Sherman believed that Grant was working and hampered by Northern public opinion. So much so that Sherman feared Grant would abandon the effort to capture Vicksburg.
General US Grant did not always present his opponents with an "unconditional surrender". In the case at Appomattox Court House, Grant overruled General Custer's demand of an unconditional surrender. As an aside, President Lincoln had urged Grant to be lenient with Robert E. Lee.
US President Lincoln was cautious to a critical mass. Knowing all too well that former general McClellan was a political general, Lincoln investigated if Grant had any political aspirations. Grant did not, so that cleared the way for his promotion.
At the very start, General Winfield Scott; afterwords General US Grant