Even before the evacuation of Boston, it had been foreseen that New York must become the seat of war; and that most important military operations would be carried on in that colony. The fortifications which had been commenced for the defence of its capital were indefatigably prosecuted; and, after the arrival of General Washington, these works, combined with those to be erected in the passes through the highlands up the Hudson, were the objects of his unremitting attention.
The difficulty which had been experienced in expelling the British from Boston, had demonstrated the importance of preventing their establishment in New York; and had contributed to the determination of contesting with them, very seriously, the possession of that important place. The execution of this determination, however, was difficult and dangerous. The defence of New York, against an enemy commanding the sea, requires an army capable of meeting him in the open field, and of acting offensively both on Long and York Islands. Congress had not adopted measures which might raise such an army. The Commander-in-chief, in his letters to that body, had long and earnestly urged the policy of bringing the whole strength of the country into regular operation. The government was not inattentive to his remonstrances; but many circumstances combined to prevent such a military establishment as the exigency required.
The congress which assembled in 1775 had adjourned with strong hopes that the differences between the Mother Country and the Colonies would soon be adjusted to their mutual satisfaction. When the temper manifested both by the king and his parliament had dissipated these hopes, and the immense preparations of Great Britain for war, evinced the necessity of preparations equally vigorous on the part of America, the resolution to make them was finally taken. But, unaccustomed to the great duties of conducting a war of vast extent, they could not estimate rightly the value of the means employed, nor calculate the effects which certain causes would produce. Opinions of the most pernicious tendency prevailed; from which they receded slowly, and from which they could be ultimately forced only by melancholy experience.
The most fatal among these was the theory, that an army could be created every campaign for the purposes of that campaign; and that such temporary means would be adequate to the defence of the country. They relied confidently on being able on any emergency, to call out a force suited to the occasion:—they relied too much on the competence of such a force to the purposes of war, and they depended too long on the spirit of patriotism, which was believed to animate the mass of the people.
Under these impressions, the determination to form a permanent army was too long delayed; and the measures necessary to raise such an army were deferred, till their efficacy became doubtful. It was not until June, 1776, that the representations of the Commander-in-chief could obtain a resolution, directing soldiers to be enlisted for three years, and offering a bounty of ten dollars to each recruit. The time when this resolution could certainly have been executed, had passed away. That zeal for the service, which was manifested in the first moments of the war, had long since begun to abate; and though the determination to resist had become more general, that enthusiasm which prompts individuals to expose themselves to more than an equal share of danger and hardship, was visibly declining. The progress of these sentiments seems to have been unexpected; and the causes producing such effects appear not to have been perceived. The regiments voted by congress were incomplete; and that bounty, which, if offered in time, would have effected its object, came too late to fill them.
It was not in numbers only that the weakness of the American army consisted. In arms, ammunition, tents, and clothes, its deficiency was such as to render it unfit for the great purposes of war, and inferior, in all these respects, to the enemy which it was destined to encounter.
But, however inadequate to the object the regular force might be, both the government and the Commander-in-chief were determined to defend New York; and congress passed a resolution to reinforce the army with thirteen thousand eight hundred militia. For the defence of the middle colonies, and for the purpose of repelling any attempt to land on the Jersey shore, it was resolved to form a flying camp, to be composed of ten thousand men, to be furnished by Pennsylvania, Delaware, and Maryland. The militia, both of the flying camp and of the army at New York, were to be engaged to serve until the first of December; and the Commander-in-chief was empowered to call on the neighbouring colonies for such additional temporary aids of militia, as the exigencies of his army might render necessary.
Great and embarrassing as were the difficulties already noticed, they were augmented by the disaffection of the city of New York, and of the adjacent islands. Although Governor Tryon had found it necessary to take refuge on board some ships lying in the harbour, he had been permitted to continue an open intercourse with the inhabitants, which enabled him to communicate freely with the royalists; and to concert plans of future co-operation. This intercourse was broken off by the arrival of the Commander-in-chief;—yet a plot was formed, through the agency of the mayor, to rise in favour of the British on their landing; and, as was understood, to seize and deliver up General Washington himself. This plot had extended to the American army, and even to the general's guards. It was fortunately discovered in time to be defeated; and some of the persons concerned were executed. About the same time a similar plot was discovered in the neighbourhood of Albany; and there too, executions were found necessary.
Hitherto, the sole avowed object of the war had been a redress of grievances. The utmost horror had been expressed at the idea of attempting independence; and the most anxious desire of re-establishing the union which had so long subsisted between the two countries on its ancient principles, was openly and generally declared. But however sincere these declarations might have been at the commencement of the conflict, the operation of hostilities was infallible. To profess allegiance and respect for a monarch with whom they were at open war, was an absurdity too great to be long continued. The human mind, when it receives a strong impulse, does not, like projectiles, stop at the point to which the force originally applied may have been calculated to carry it. Various causes act upon it in its course. When the appeal was made to arms, a great majority of those who guided the councils and led the forces of America, wished only for a repeal of the acts of parliament which had occasioned their resistance to the authority of the crown; and would have been truly unwilling to venture upon the unexplored field of self-government. For some time, prayers were offered for the king, in the performance of divine service; and, in the proclamation of a fast by congress, in June, 1775, one of the motives for recommending it, was, to beseech the Almighty "to bless our rightful sovereign King George III. and inspire him with wisdom."