Fort Amsterdam was repaired.

The city was enclosed by a ditch and palisade, with a breastwork extending from the East river to the North river.

The whole body of citizens mounted guard every night.

A frigate in the harbor was ready at any moment to spread its sails, and its "guns were kept loaded day and night." The citizens without exception, were ordered to work upon the defences, under penalty of fine, loss of citizenship and banishment.
Thus barbaric war came again to mar all the prosperity of the colony, and to undermine all its foundations of growth and happiness.

The Mohican Indians, on the east side of the North river, and whose territory extended to the Connecticut, were allies of the English.
Uncas, the chief of this tribe, declared that Governor Stuyvesant was plotting to arm the Narragansetts against New England.