Statistics for occurrence #1 of “Major J. M. Macomb” in chapter 227 of Rebellion Record: a Diary of American Events: Documents and Narratives, Volume 2.:

... Major A. J. Myers, signal officer; Major Stewart Van Vleit, chief quartermaster; Captain H. F. Clarke, chief commissary; Surgeon C. S. Tripler, medical director; Major J. G. Barnard, chief engineer; Major J. M. Macomb , chief topographical engineer; Captain Charles P. Kingsbury, chief of Ordnance; Brig.-Gen. George Stoneham, Volunteer service, chief of Cavalry; Brig.-Gen. W. S. Barry, Volunteer service, chief of Ar...
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