Statistics for occurrence #1 of “Headquarters” in chapter 6 of Alfred Roman, The military operations of General Beauregard in the war between the states, 1861 to 1865:

...neral Beauregard felt compelled, nevertheless, to decline acceding to the suggestion made, as will be shown by the official answer sent to General Ripley, and through him to Colonel Simonton: Headquarters , Department S. C., Ga., and Fla., Charleston, S. C., June 23d, 1863. General R. S. Ripley, Comdg. First Mil. Dist., etc., etc.: General,—I am instructed to communicate for your information ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Headquarters (Washington, United States) 1,024 466 0 0 0 user votes
Headquarters (New Jersey, United States) 132 124 0 0 0 user votes
Headquarters (Kentucky, United States) 84 0 0 0 0 user votes
Headquarters (Arizona, United States) 2 0 0 0 0 user votes
Headquarters (Idaho, United States) 0 0 0 0 0 user votes

† This entity has been selected by the automated classifier as the most likely match in this context. It may or may not be the correct match.