To hold what had been gained a chain of posts was now stretched across the Jerseys from Perth Amboy to the Delaware, with Trenton, Bordentown, and Burlington as the outposts and New Brunswick as the dépôt, the first being well placed either for making an advance, or for checking any attempts by the Americans to recross the river. Washington believed that the British would be in Philadelphia just as soon as the ice was strong enough to bear artillery. If the expected dissolution of his army had happened, no doubt the enemy's advanced troops would have taken possession of the city at once. And it is even quite probable that this contingency was considered a foregone conclusion, since British agents were now actively at work in Washington's own camp, undermining the feeble authority which everybody believed was tottering to its fall. Be that as it may, the fact remains that active operations were for the present wholly suspended. At the officers' messes or in the barracks all the talk was of going home. Besides, if Howe had really wanted to take Philadelphia there was nothing to prevent his doing so. There were no defences. If saved at all, the city must be defended in the field, not in the streets.

Bordentown being rather the most exposed, Count Donop was left there with some 2,000 Hessians, and Colonel Rall at Trenton with 1,200 to 1,300 more. Both were veterans. As these Hessians were about equally hated and feared, it was well reasoned that they would be all the more watchful against a surprise.

THE ATTACK ON TRENTON.
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Rall and Donop.

As soon as he had time to look about him, Donop at once extended his outposts down to Burlington, on the river, and to Black Horse, on the back-road leading south to Mt. Holly, thus establishing himself at the base point of a triangle from which his outposts could be speedily reënforced, either from Bordentown or each other. The post at Burlington was only eighteen miles from Philadelphia.

In order to understand the efforts subsequently made to break through it this line should be carefully traced out on the map. In spots it was weak, yet the long gaps, like that between Princeton and Trenton, and between Princeton and Brunswick, were thought sufficiently secured by occasional patrols.