Statistics for occurrence #1 of “Maj. Washington Marks” in chapter 15 of John Dimitry , A. M., Confederate Military History, a library of Confederate States Military History: Volume 10.1, Louisiana:

...y; Col. Daniel Gober's mounted infantry; Maj. Frederick N. Ogden's cavalry battalion; Col. Frank P. Powers' Mississippi and Louisiana cavalry. The First Louisiana heavy artillery was at Mobile, and Maj. Washington Marks was in command of the water batteries. When Mobile, so long defiant, was threatened by formidable land forces in the spring of 1865, Forts Morgan and Gaines having fallen in the previous August, ...
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