Future military operations were necessarily dependent on the plans to be developed by the British. But as the siege of Boston progressed, it became obvious that that point at least could not be made a base for the ensuing campaign. No other was more likely to be selected by the enemy than New York; and to New York the war finally came. The topography of this new region, the transfer to it of the two armies, and the preparations made for its defence by the Americans, next claim attention. CHAPTER II. FORTIFYING NEW YORK AND BROOKLYN. New York City, in 1776, lay at the end of Manhattan Island, in shape somewhat like an arrow-head, with its point turned towards the sea and its barbs extended at uneven lengths along the East and Hudson rivers. It occupied no more space than is now included within the five lower and smallest of its twenty-four wards. Excepting a limited district laid out on the east side, in part as far as Grand street, the entire town stood below the line of the present Chambers street, and covered an area less than one mile square. Then, as now, Broadway was its principal thoroughfare. Shaded with rows of trees, and lined mainly with residences, churches, and public-houses, it stretched something more than a mile to the grounds of the old City Hospital, near Duane street. Its starting-point was the Battery at the end of the island, but not the Battery of to-day; for, under the system of "harbor encroachments," the latter has more than trebled in size, and is changed both in its shape and its uses. The city defences at that time occupied the site. Here at the foot of Broadway old Fort George had been erected upon the base of the older Fort Amsterdam, to guard the entrance to the rivers, and with its outworks was the only protection against an attack by sea. It was a square bastioned affair, with walls of stone, each face eighty feet in length, and within it stood magazines, barracks, and, until destroyed by fire, the mansion of the colonial governors. For additional security, about the time of the French war, an extensive stone battery, with merlons of cedar joists, had been built just below the fort along the water's edge, enclosing the point from river to river, and pierced for ninety-one pieces of cannon.[9] [Footnote 9: The site of Fort George is now covered in part by the buildings at the west corner of the Bowling Green block, where the steamship companies have their offices. South and west of this point the Battery is almost entirely made-land. (Compare Ratzer's map of 1767 with the maps recently compiled by the New York Dock Department.) As to other old defences of the city, Wm. Smith, the historian, writing about 1766, says: "During the late war a line of palisadoes was run from Hudson's to the East River, at the other end of the city [near the line of Chambers street], with block-houses at small distances. The greater part of these still remain as a monument of our folly, which cost the province about L8000."]