Statistics for occurrence #1 of “Fort Johnson” in chapter 1.1 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War. Volume 4.:

...oats was regularly answered. Three guns, instead of two, were mounted at the Shell Point Battery; and I also caused gun-batteries of 10-inch Columbiads to be substituted for the mortar-batteries at Fort Johnson . I ordered the forces on Morris Island to be reduced to a number strictly sufficient to hold our works there; and, the enemy's pickets along the Stono having been increased at that time, I instruct...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Fort Johnson (New York, United States) 2 0 0 0 0 user votes
Fort Johnson (Utah, 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.