Statistics for occurrence #1 of “Columbus” in chapter 13 of Admiral David D. Porter, The Naval History of the Civil War.:

...was hotly engaged, except one battalion left at the landing as a reserve, and to protect the transports. General Grant had requested Com. Walke, with the two gun-boats, to attack the batteries at Columbus as a diversion, which was done. As the gun-boats were under fire of some twenty heavy guns having a plunging fire, it was necessary to manage them with great skill to prevent their being disabled, ...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Columbus (Georgia, United States) 419 0 283 0 0 user votes
Columbus (Mississippi, United States) 325 6 141 0 0 user votes
Columbus (Alabama, United States) 4 0 0 0 0 user votes
Columbus (Indiana, United States) 3 0 3 0 0 user votes
Columbus (Arkansas, United States) 1 0 1 0 0 user votes
Columbus (New York, United States) 1 0 1 0 0 user votes
Columbus (North Carolina, United States) 1 0 1 0 0 user votes
Columbus (Colorado, United States) 0 0 0 0 0 user votes
Columbus (Georgia, United States) 0 0 0 0 0 user votes
Columbus (Illinois, United States) 0 0 0 0 0 user votes
Columbus (Kansas, United States) 0 0 0 0 0 user votes
Columbus (Louisiana, United States) 0 0 0 0 0 user votes
Columbus (Michigan, United States) 0 0 0 0 0 user votes
Columbus (Montana, United States) 0 0 0 0 0 user votes
Columbus (Nevada, United States) 0 0 0 0 0 user votes
Columbus (New Jersey, United States) 0 0 0 0 0 user votes
Columbus (New Mexico, United States) 0 0 0 0 0 user votes
Columbus (North Carolina, United States) 0 0 0 0 0 user votes
Columbus (North Dakota, United States) 0 0 0 0 0 user votes
Columbus (Pennsylvania, 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.