Fort Washington was betrayed, and fell on the 16th of November. Then began that miserable retreat of the American army through the Jerseys, with the British sometimes in full pursuit, sometimes merely camping on the trail of the hapless revolutionists. For Washington's force was now reduced to thirty-five hundred, and they were ragged, half fed, and wretched in mind and body. Many had no shoes, and in one regiment there was not a pair of trousers. They left the moment their leave expired, and recruits were drummed up with great difficulty. Washington was obliged to write eight times to General Lee, who was at North Castle with a considerable force, before he was able to hope for relief in that quarter.
Hamilton had a horse at times, at others not. But his vitality was proof against even those endless days and nights of marching and countermarching, through forests and swamps, in the worst of late autumn and winter weather; and he kept up the spirits of his little regiment, now reduced from bullets, exposure, and the expiration of service to thirty men. Nevertheless, he held the British in check at the Raritan River while the Americans destroyed the bridge, and when Washington, after having crossed the Delaware, determined to recross it on Christmas night and storm Trenton, he was one of the first to be chosen, with what remained of his men and guns.
As they crossed the Delaware that bitter night, the snow stinging and blinding, the river choked with blocks of ice, Hamilton for the first time thought on St. Croix with a pang of envy. But it was the night for their purpose, and all the world knows the result. The victory was followed on the 3d of January by the capture of Princeton; and here Hamilton's active military career came to an end for the present.
Well do I recollect the day [wrote a contemporary] when Hamilton's company marched into Princeton. It was a model of discipline. At their head was a boy, and I wondered at his youth; but what was my surprise, when, struck with his slight figure, he was pointed out to me as that Hamilton of whom we had heard so much.