When congress directed enlistments to be made for three years, or during the war, the recruiting officers of Pennsylvania, in some instances, instead of engaging their men, definitively, for the one period or the other, engaged them generally for three years, or the war. This ambiguity in the terms of enlistment produced its natural effect. The soldier claimed his discharge at the expiration of three years, and the officer insisted on retaining him in service during the war. The soldier submitted with the more reluctance to the supposed imposition, as he constantly witnessed the immense bounties given to those who were not bound by a former enlistment. [Sidenote: Mutiny in the Pennsylvania line.] The discontents which these various causes had been long fomenting, broke out on the night of the 1st of January, in an open and almost universal revolt of the line. On a signal given, the great body of the non-commissioned officers and privates paraded under arms, avowing the determination to march to the seat of congress, and either obtain redress of their complicated grievances, or serve no longer. In the attempt to suppress the mutiny, six or seven of the mutineers were wounded on the one side; and on the other, Captain Billing was killed, and several other officers were dangerously wounded. The authority of General Wayne availed nothing. On cocking his pistol, and threatening some of the most turbulent, the bayonet was presented to his bosom; and he perceived that strong measures would produce his own destruction, and perhaps the massacre of every officer in camp. A few regiments who did not at first join the mutineers, were paraded by their officers; but, had they even been willing to proceed to extremities, they were not strong enough to restore order. Infected quickly with the general contagion, or intimidated by the threats of the mutineers, they joined their comrades; and the whole body, consisting of about thirteen hundred men, with six field pieces, marched, under the command of their sergeants, towards Princeton. The next day. General Wayne, accompanied by Colonels Butler and Stewart, officers possessing, in a high degree, the affections of the soldiery, followed them, in the hope of bringing them back to their duty, or at least of dividing them. They were overtaken near Middlebrook, and invited by a written message from General Wayne, to appoint one man from each regiment to state the grievances of which they complained. In consequence of this invitation, a sergeant from each regiment met the officers at their quarters, and some verbal communications were made, from the complexion of which sanguine hopes were entertained that the affair might be terminated without farther hazard, or much injury to the service.