Still, in the frozen condition of the bay and rivers, some minor blow might be attempted, sufficient to rouse and cheer the spirits of the people. With this view, having ascertained that the ice formed a bridge across the strait between the Jersey shore and Staten Island, he projected a descent upon the latter by Lord Stirling with twenty-five hundred men, to surprise and capture a British force of ten or twelve hundred. His lordship crossed on the night of the 14th of January, from De Hart's Point to the island. His approach was discovered; the troops took refuge in the works, which were too strongly situated to be attacked; a channel remaining open through the ice across the bay, a boat was despatched to New York for reinforcements. The projected surprise having thus proved a complete failure, and his own situation becoming hazardous, Lord Stirling recrossed to the Jersey shore with a number of prisoners whom he had captured.
By way of retort, Knyphausen, on the 25th of January, sent out two detachments to harass the American outposts. One crossed to Paulus Hook, and being joined by part of the garrison of that post, pushed on to Newark, surprised and captured a company stationed there, set fire to the academy, and returned without loss. The other detachment, consisting of one hundred dragoons and between three and four hundred infantry, under Lieutenant-colonel Boskirk, crossed from Staten Island to Trembly's Point, surprised the picket-guard at Elizabethtown, and captured two majors, two captains, and forty-two privates. This, likewise, was effected without loss. The disgraceful part of the expedition was the burning of the town house, a church, and a private residence, and the plundering of the inhabitants. The church destroyed was a Presbyterian place of worship, and its pastor, the Rev. James Caldwell, had rendered himself an especial object of hostility to both Briton and tory. His church had at times served as hospital to the American soldier; or shelter to the hastily assembled militia. Its bell was the tocsin of alarm; from its pulpit he had many a time stirred up the patriotism of his countrymen by his ardent, eloquent, and pathetic appeals. His popularity in the army, and among the Jersey people, was unbounded.
Another noted maraud during Knyphausen's military sway, was in the lower part of Westchester County, in a hilly region lying between the British and American lines, which had been the scene of part of the past year's campaign. In this region, about twenty miles from the British outposts, and not far from White Plains, the Americans had established a post of three hundred men at a stone building commonly known as Young's house, from the name of its owner. It commanded a road which passed from north to south down along the narrow but fertile valley of the Sawmill River. On this road the garrison of Young's house kept a vigilant eye, to intercept the convoys of cattle and provisions which had been collected or plundered by the enemy, and which passed down this valley toward New York. This post had long been an annoyance to the enemy, but its distance from the British lines had hitherto saved it from attack. The country now was covered with snow; troops could be rapidly transported on sleighs; and it was determined that Young's house should be surprised, and this rebel nest broken up.
On the evening of the 2d of February, an expedition set out for the purpose from King's Bridge, led by Lieutenant-colonel Norton, and consisting of four flank companies of guards, two companies of Hessians, and a party of Yagers, all in sleighs; beside a body of Yager cavalry, and a number of mounted Westchester refugees, with two three-pounders. The snow being newly fallen, was deep; the sleighs broke their way through it with difficulty. The troops at length abandoned them and pushed forward on foot. The cannon were left behind for the same reason. It was a weary tramp. The sun rose while they were yet seven miles from Young's house. To surprise the post was out of the question; still they kept on. Before they could reach the house the country had taken the alarm, and the Westchester yeomanry had armed themselves, and were hastening to aid the garrison. The British light infantry and grenadiers invested the mansion; the cavalry posted themselves on a neighboring eminence, to prevent retreat or reinforcement, and the house was assailed. It made a brave resistance, and was aided by some of the yeomanry stationed in an adjacent orchard. The garrison, however, was overpowered; numbers were killed, and ninety taken prisoners. The house was sacked and set in flames.
The most irksome duty that Washington had to perform during this winter's encampment at Morristown, regarded General Arnold and his military government of Philadelphia in 1778. To explain it requires a glance back to that period.
At the time of entering upon this command, Arnold's accounts with government were yet unsettled; the committee appointed by Congress at his own request to examine them having considered some of his charges dubious and others exorbitant. The command of Philadelphia at this time was a delicate and difficult one, and required to be exercised with extreme circumspection. The boundaries between the powers vested in the military commander and those inherent in the State government were ill defined. Disaffection to the American cause prevailed both among the permanent and casual residents, and required to be held in check with firmness but toleration. By a resolve of Congress, no goods, wares, or merchandise were to be removed, transferred, or sold, until the ownership of them could be ascertained by a joint committee of Congress and of the Council of Pennsylvania; any public stores belonging to the enemy were to be seized and converted to the use of the army. Washington, in his letter of instructions left it to Arnold's discretion to adopt such measures as should appear to him most effectual and least offensive in executing this resolve of Congress; in which he was to be aided by an assistant quartermaster-general, subject to his directions.
One of Arnold's first measures was to issue a proclamation enforcing the resolve of Congress. In so doing, he was countenanced by leading personages of Philadelphia, and the proclamation was drafted by General Joseph Reed. The measure excited great dissatisfaction, and circumstances attending the enforcement of it gave rise to scandal. Former instances of a mercenary spirit made Arnold liable to suspicions, and it was alleged that, while by the proclamation he shut up the stores and shops so that even the officers of the army could not procure necessary articles of merchandise, he was privately making large purchases for his own enrichment.
His style of living gave point to this scandal. He occupied one of the finest houses in the city; set up a splendid establishment; had his carriage and four horses and a train of domestics; gave expensive entertainments, and indulged in a luxury and parade which were condemned as little befitting a republican general. Ostentatious prodigality, in fact, was Arnold's besetting sin. In the exercise of his military functions he had become involved in disputes with the president (Wharton) and executive council of Pennsylvania, and by his conduct, which was deemed arbitrary and arrogant, had drawn upon himself the hostility of that body, which became stern and unsparing censors of his conduct.
He had not been many weeks in Philadelphia before he became attached to one of its reigning belles, Miss Margaret Shippen, daughter of Mr. Edward Shippen, in after years chief justice of Pennsylvania. Her family were not considered well affected to the American cause; the young lady herself, during the occupation of the city by the enemy, had been a "toast" among the British officers. Party feeling at that time ran high in Philadelphia on local subjects connected with the charge of the State government. Arnold's connection with the Shippen family increased his disfavor with the president and executive council, who were whigs to a man.
In the beginning of December, General Reed became president of the executive council of Pennsylvania, and under his administration the ripening hostility to Arnold was brought to a crisis. His public conduct [during Arnold's absence at Washington's camp on the Raritan] was discussed in the executive council of Pennsylvania, and it was resolved unanimously, that the course of his military command in the city had been in many respects oppressive, unworthy of his rank and station, and highly discouraging to the liberties and interests of America, and disrespectful to the supreme executive authority of the State. As he was an officer of the United States, the complaints and grievances of Pennsylvania were set forth by the executive council in eight charges, and forwarded to Congress, accompanied by documents, and a letter from President Reed.