It was still Henry Halleck.
But Grant's success at Vicksburg gave him great credibility, and the following March he was appointed General-in-Chief, with Halleck agreeing to serve under him as Chief-of-Staff.
The Battle of Vicksburg gave the Union control of the Mississippi River.
The union's leader was Ulysses Grant the 18 president and the Confederacy was led by John Pemberton.
The Union
The battle of Vicksburg
Vicksburg - U.S. Grant (Union) Gettysburg - George Meade (Union)
The Siege of Vicksburg. It meant the end of the war in the West. It released the Union troops to go and help at Chattanooga. And it brought great credibility of U.S.Grant, who would become General-in-Chief a few months later.
Confederate
Union 2522
union 2522
Ulysses S. Grant
Joseph(fighting Joe)
The Battle of Vicksburg is also called the Siege of Vicksburg