GUARDING THE LINES.
Keeping the Continental Army intact under all these conditions was but part of Washington’s herculean task in 1779-80. Again, as at Morristown in the winter of 1777, and at Middlebrook in the winter of 1778-79, the threat of attack by an enemy superior in manpower and equipment hung constantly over his head. Communications between Philadelphia and the Hudson Highlands had to be protected, and the northern British Army had to be prevented from extending its lines, now confined chiefly to New York and Staten Island, or from obtaining forage and provisions in the countryside beyond.
While the main body of American troops was quartered in Jockey Hollow, certain parts of it, varying in strength from about 200 men to as high as 2,000, were stationed at Princeton, New Brunswick, Perth Amboy, Rahway, Westfield, Springfield, Paramus, and similar outposts in New Jersey. Washington changed the most important of these detachments once a fortnight at first, but toward the spring of 1780 some units remained “on the Lines” for much longer periods. Thus Morristown served again as the vital center of a defensive-offensive web for the northern New Jersey and southern New York areas. The enemy damaged the outer margins of that web on several occasions, notably on June 7 and 23, when they penetrated to Connecticut Farms (now Union) and Springfield, but Washington’s defenses were never seriously broken, and through all that winter and spring his position in the Morris County hills remained relatively undisturbed.