Every man who had a practical knowledge of the subject easily perceived the defective nature and dangerous tendency of this arrangement. It was an attempt to carry on the war rather by separate provincial efforts than by a combination of national strength, and if the army received from any State where it was acting the appointed quantity of necessaries it had no right, though starving, to purchase what it stood in need of. Besides the carriage of provisions from distant parts was troublesome, expensive, and sometimes impracticable.

The troops were ill clothed, their pay was in arrear, and that of the officers, owing to the great depreciation of the paper currency, was wholly unequal to their decent maintenance. These multiplied privations and sufferings soured the temper of the men, and it required all the influence of Washington to prevent many of the officers from resigning their commissions. The long continuance of want and hardship produced relaxation of discipline which at length manifested itself in open mutiny. On the 25th of May (1780) two regiments belonging to Connecticut paraded under arms, with the avowed intention of returning home, or of obtaining subsistence at the point of the bayonet. The rest of the soldiers, though they did not join in the mutiny, showed little disposition to suppress it. At length the two regiments were brought back to their duty, but much murmuring and many complaints were heard. While the army was in such want the inhabitants of New Jersey, where most of the troops were stationed, were unavoidably harassed by frequent requisitions, which excited considerable discontent. Reports of the mutinous state of the American army and of the dissatisfaction of the people of New Jersey, probably much exaggerated, were carried to General Knyphausen, who, believing the American soldiers ready to desert their standards and the inhabitants of New Jersey willing to abandon the Union, on the 6th of June (1780), passed from Staten Island to Elizabethtown, in Jersey, with 5,000 men. That movement was intended to encourage the mutinous disposition of the American troops, and to fan the flame of discontent among the inhabitants of the province. Early next morning he marched into the country toward Springfield by the way of Connecticut Farms, a flourishing plantation, so named because the cultivators had come from Connecticut. But even before reaching that place which was only five or six miles from Elizabethtown, the British perceived that the reports which they had received concerning the discontent of the Americans were incorrect, for on the first alarm the militia assembled with great alacrity and aided by some small parties of regular troops, annoyed the British by an irregular but galling fire of musketry, wherever the nature of the ground presented a favorable opportunity, and although those parties were nowhere strong enough to make a stand, yet they gave plain indications of the temper and resolution which were to be encountered in advancing into the country. At Connecticut Farms the British detachment halted. The settlers were known to be zealous in the American cause and therefore with a little spirit of revenge, the British, among whom was General Tryon, laid the flourishing village, with its church and the minister's house, in ashes. Here occurred one of those affecting incidents which being somewhat out of the ordinary course of the miseries of war make a deep impression on the public mind. Mr. Caldwell, minister of the place, had withdrawn toward Springfield, but had left his wife and family behind believing them to be in no danger. The British advanced to the industrious and peaceful village. Mrs. Caldwell, trusting to her sex for safety and unsuspicious of harm, was sitting in her house with her children around her when a soldier came up, leveled his musket at the window, and shot her dead on the spot in the midst of her terrified family. On the intercession of a friend the dead body was permitted to be removed when the house was set on fire. This atrocious deed excited such general horror and detestation that the British thought proper to disavow it, and to impute the death of Mrs. Caldwell to a random shot from the retreating militia, though the militia did not fire a musket in the village. The wanton murder of the lady might be the unauthorized act of a savage individual, but can the burning of the house after her death be accounted for in the same way? Knyphausen was a veteran officer and cannot be supposed capable of entering into local animosities or of countenancing such brutality, but Tryon was present and his conduct on other occasions was not unblemished.

Mr. Caldwell had rendered himself particularly obnoxious to the enemy, and was cordially hated by Tryon for his zealous devotion to the patriotic cause. He had served as a chaplain in the army, was exceedingly popular among the patriots of New Jersey, had given up his church to be used as a hospital, and had exerted himself by eloquent appeals to arouse his countrymen to unflinching resistance against the enemy. For this Tryon caused his church to be burnt and did not prevent the soldiers from shooting his wife.

After destroying the Connecticut Farms, Knyphausen advanced toward Springfield, where the Jersey brigade, under General Maxwell, and a large body of militia had taken an advantageous position and seemed resolved to defend it. General Knyphausen, however, had met with a reception so different from what he expected that without making any attempt on the American post he withdrew during the night to Elizabethtown.

On being informed of the invasion of New Jersey, Washington put his army in motion early on the morning of the day in which Knyphausen marched from Elizabethtown and proceeded to the Short hills behind Springfield, while the British were in the vicinity of that place. Feeble as his army was, he made the necessary dispositions for fighting, but the unexpected retreat of Knyphausen rendered a battle unnecessary. The British were followed by an American detachment, which attacked their rear guard next morning but was repulsed. Instead of returning to New York, Knyphausen lingered in the vicinity of Elizabethtown and on Staten Island, and Washington, unwilling with his inadequate force to hazard an engagement except on advantageous ground, remained on the hills near Springfield to watch the movements of the British army. At that time the army under the immediate orders of Washington did not exceed 4,000 effective men.

On the 18th of June (1780), Sir Henry Clinton returned from South Carolina with about 4,000 men, and after receiving this reinforcement the British force in New York and its dependencies amounted to 12,000 effective and regular troops, most of whom could be brought into the field for any particular service; besides these, the British commander had about 4,000 militia and refugees for garrison duty. The British army directed on any one point would have been irresistible; therefore Washington could only follow a wary policy, occupying strong ground, presenting a bold front, and concealing the weakness of his army as far as possible.

The embarkation of troops by Sir Henry Clinton awakened the apprehensions of Washington lest he should sail up the Hudson and attack the posts in the Highlands. Those posts had always been objects of much solicitude to Washington, and he was extremely jealous of any attack upon them. In order to be in readiness to resist any such attack, he left General Greene at Springfield, with 700 Continentals, the Jersey militia, and some cavalry, and proceeded toward Pompton with the main body of the army. Sir Henry Clinton, after having perplexed the Americans by his movements, early on the morning of the 23d of June (1780), rapidly advanced in full force from Elizabethtown toward Springfield. General Greene hastily assembled his scattered detachments and apprised Washington of the march of the royal army, who instantly returned to support Greene's division. The British marched in two columns—one on the main road leading to Springfield and the other on the Vauxhall road. Greene scarcely had time to collect his troops at Springfield and make the necessary dispositions when the royal army appeared before the town and a cannonade immediately began. A fordable rivulet, with bridges corresponding to the different roads, runs in front of the place. Greene had stationed parties to guard the bridges and they obstinately disputed the passage, but after a smart conflict they were overpowered and compelled to retreat.

Greene then fell back and took post on a range of hills, where he expected to be again attacked. But the British, instead of attempting to pursue their advantage, contented themselves with setting fire to the village and laying the greater part of it in ashes. Discouraged by the obstinate resistance they had received and ignorant of the weakness of the detachment which opposed them, they immediately retreated to Elizabethtown, pursued with the utmost animosity by the militia, who were provoked at the burning of Springfield. They arrived at Elizabethtown about sunset, and, continuing their march to Elizabeth Point, began at midnight to pass over to Staten Island. Before 6 next morning they had entirely evacuated the Jerseys and removed the bridge of boats which communicated with Staten Island.

In the skirmish at Springfield the Americans had about 20 men killed and 60 wounded. The British suffered a corresponding loss. Clinton's object in this expedition seems to have been to destroy the American magazines in that part of the country. But the obstinate resistance which he met with at Springfield deterred him from advancing into a district abounding in difficult passes, where every strong position would be vigorously defended. He seems also to have been checked by the apprehension of a fleet and army from France.

Washington was informed of Clinton's march soon after the British left Elizabethtown, but, though he hastily returned, the skirmish at Springfield was over before he reached the vicinity of that place.