Statistics for occurrence #1 of “Port Royal” in chapter 2.3 of Robert Underwood Johnson, Clarence Clough Buell, Battles and Leaders of the Civil War: Volume 2.:

...mprovised gun-boats would have held the entire length of the river if they had been sent there in time. The efficient fleet with which Du Pont, in November, 1861, attacked and captured the works at Port Royal could at that time have steamed up to New Orleans and captured the city without difficulty. Any three vessels could have passed Forts Jackson and St. Philip a month after the commencement of the wa...
Max. Freq. Min. Freq.
Entity Corpus Doc Corpus Doc  
Port Royal (South Carolina, United States) 2,928 17 170 1 0 user votes
Port Royal (Jamaica) 4 0 4 0 0 user votes
Port Royal (Georgia, United States) 2 0 0 0 0 user votes
Port Royal (Alabama, United States) 0 0 0 0 0 user votes
Port Royal (Florida, United States) 0 0 0 0 0 user votes
Port Royal (Kentucky, United States) 0 0 0 0 0 user votes
Port Royal (Pennsylvania, United States) 0 0 0 0 0 user votes
Port Royal (Pennsylvania, United States) 0 0 0 0 0 user votes
Port Royal (Tennessee, 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.