Statistics for occurrence #1 of “Fort McHenry” in chapter 8 of H. Wager Halleck , A. M. , Lieut. of Engineers, U. S. Army ., Elements of Military Art and Science; or, Course of Instruction in Strategy, Fortification, Tactis of Battles &c., Embracing the Duties of Staff, Infantry, Cavalry, Artillery and Engineers. Adapted to the Use of Volunteers and Militia.:

...t of which were ships of the line, carrying an army of over six thousand combatants. The troops were landed at North Point, while sixteen of the bomb-vessels and frigates approached within reach of Fort McHenry , and commenced a bombardment which lasted twenty-five hours. During this attack, the enemy threw fifteen hundred shells, four hundred of which exploded within the walls of the fort, but without makin...
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