The Citizens’ Committee and the city officials, however, were able to guess pretty clearly what this movement of troops and heavy artillery meant. There was nothing in the lower harbor that possibly could demand such force except one place—the forts on Sandy Hook, the last remaining harbor defense that still was under the American flag. Solitary though it was, so long as it remained intact it forbade the entrance of New York Harbor to any hostile vessel.

There had been wonder before because the enemy commander had not demanded the surrender of the Sandy Hook defenses under threat of bombarding the city, as he had demanded and forced the surrender of Forts Hamilton and Wadsworth.

“Because Sandy Hook is not within the city, as the other two forts were,” was the solution at which the city’s lawyers arrived, after considering the rules governing military action. “The invader plainly is adhering carefully to all the accepted Rules of War. By doing so, he can, and does, hold us to account rigorously under the same Rules. This is profitable to him, for despite all their apparent stipulations in favor of a conquered territory, the Rules of War are made, after all, to facilitate war.”

It was impossible to warn the commander at Sandy Hook. Private service over the telephone and telegraph systems was suspended entirely. The fire alarm system was operated under the watchful control of soldiers. In Police Headquarters sat a Colonel of Cavalry whose countersign was necessary for every order issued by the Police Commissioner.

This was a stern officer, who held the police force in a hard, masterful hand. The men were accountable more than ever for strict enforcement of all laws, but they were subject also to summary control by every military officer. Even guards and posts of private soldiers had some authority over them.

There were many daily experiences and sights in their streets that served to make the people tractable, but few things were so powerful as the daily spectacle of their pugnacious police yielding sullen but complete obedience.

“It is unlawful to disobey orders given by our army.” This short regulation covered a great deal. It tied the police and the citizens hand and foot.[157]