Meanwhile, in New England, the warlike feeling had become too strong to be contented merely with defensive measures. No sooner had Benedict Arnold reached Cambridge than he suggested to Dr. Warren that an expedition ought to be sent without delay to capture Ticonderoga and Crown Point. These fortresses commanded the northern approaches to the Hudson river, the strategic centre of the whole country, and would be of supreme importance either in preparing an invasion of Canada or in warding off an invasion of New York. Besides this, they contained a vast quantity of military stores, of which the newly gathered army stood in sore need. The idea found favour at once. Arnold received a colonel's commission from the Massachusetts Congress, and was instructed to raise 400 men among the Berkshire Hills, capture the fortresses, and superintend the transfer of part of their armament to Cambridge. When Arnold reached the wild hillsides of the Hoosac range, he found that he had a rival in the enterprise. The capture of Ticonderoga had also been secretly planned in Connecticut, and was entrusted to Ethan Allen, the eccentric but sagacious author of that now-forgotten deistical book, "The Oracles of Reason." Allen was a leading spirit among the "Green Mountain Boys," an association of Vermont settlers formed for the purpose of resisting the jurisdiction of New York, and his personal popularity was great. On the 9th of May Arnold overtook Allen and his men on their march toward Lake Champlain, and claimed the command of the expedition on the strength of his commission from Massachusetts; but the Green Mountain Boys were acting partly on their own account, partly under the direction of Connecticut. They cared nothing for the authority of Massachusetts, and knew nothing of Arnold; they had come out to fight under their own trusted leader. But few of Arnold's own men had as yet assembled, and his commission could not give him command of Vermonters, so he joined the expedition as a volunteer. On reaching the lake that night, they found there were not nearly enough row-boats to convey the men across. But delay was not to be thought of. The garrison must not be put on its guard. Accordingly, with only eighty-three men, Allen and Arnold crossed the lake at daybreak of the 10th, and entered Ticonderoga side by side. The little garrison, less than half as many in number, as it turned out, was completely surprised, and the stronghold was taken without a blow. As the commandant jumped out of bed, half awake, he confusedly inquired of Allen by whose authority he was acting. "In the name of the Great Jehovah and the Continental Congress!" roared the bellicose philosopher, and the commandant, seeing the fort already taken, was fain to acquiesce. At the same time Crown Point surrendered to another famous Green Mountain Boy, Seth Warner, and thus more than two hundred cannon, with a large supply of powder and ball, were obtained for the New England army.