He was never Commander-in-Chief of the Union Army, so it's a bit of a trick question. His title from his appointment in early 1864 was General-in-Chief, which he held until he became President of the United States (and with it, Commander-in-Chief of the US Armed Forces) in 1869. With that in mind, the Commander-in-Chief of the Union Army in the Civil war was Abraham Lincoln up until his assassination, when Andew Johnson became Commander-in-Chief.
March of 1864 after his siege of Vicksburg.
He started in the job in March 1864.
Ulysses Grant was commander of the Union Army.
Ulysses Grant.
Ulysses S Grant was a general in the Union army.
Ulysses grant Ulysses grant
No Ulysses s grant was in the union
Ulysses S. Grant
union
Ulysses S. Grant
Ulysses S. Grant
Ulysses s grant
Of course! Ulysses S. Grant was the general of the Union Army.
Ulysses S. Grant