Statistics for occurrence #1 of “T. M. Garrison” in chapter 8 of Col. O. M. Roberts, Confederate Military History, a library of Confederate States Military History: Volume 11.1, Texas:

... active service in 1862, others went eastward for the same purpose. The following commands went to Mississippi for service: Ector's regiment, M. D. Ector, colonel; Abram Harris, lieutenant-colonel; T. M. Garrison , major. A legion—Whitfield's regiment, John W. Whitfield, colonel; E. R. Hawkins, lieutenantcol-onel; John H. Broocks, major. A legion—Waul's regiment, Thos. N. Waul, colonel; B. Timm...
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