the Battle of Chattanooga

"Well done. Many thanks to all."
--President Lincoln's telegram to General Ulysses S Grant after the battle

When U.S. Grant arrived at Chattanooga, the Federal army was on the verge of starvation and Bragg's Confederates occupied formidable heights ringing the town. But within weeks, Grant restored confidence in his ranks while Bragg's leadership had the opposite effect, creating resentment and division among his commanders.
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US Grant (left) and Braxton Bragg (right)

Have you checked out Little Wars TV?

YouTube's first channel dedicated to historical miniature wargaming is now live! The American Civil War is far from the only era of military history covered, so stop by for some incredible video terrain tutorials, battle reports, and the occasional Scotch tasting....

The official website for Little Wars TV includes lots of additional information about the series.