Statistics for occurrence #1 of “General Armstrong” in chapter 15 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 9: Poetry and Eloquence.:

...ure—in the happy land—the Canaan, toward which their yearning eyes were forever turned. Sung by the Ninth regiment U. S. Colored troops at Benedict, Maryland, winter of 1863-4. General Armstrong calls this the negro battle hymn. At Petersburg, July 29, 1864, a trooper of General Henry G. Thomas's brigade sat before the Camp fire singing this General Thomas describes the scene — the...
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