Statistics for occurrence #1 of “Brigadier-General J. H. Martindale” in chapter 7, page 226 of The Photographic History of The Civil War: in ten volumes, Thousands of Scenes Photographed 1861-65, with Text by many Special Authorities, Volume 10: The Armies and the Leaders.:

...eventh Corps, including Getty's division of the Ninth, was merged in the Eighteenth. The other commanders of the corps were Brigadier-General I. N. Palmer, Major-Generals B. F. Butler, W. F. Smith, Brigadier-General J. H. Martindale , Major-Generals E. O. C. Ord, John Gibbon, Brigadier-General C. A. Heckman, and Brevet Major-General Godfrey Weitzel. In April, 1864, this corps, with the Tenth, formed the Army of the James. It ...
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