Benedict Arnold, who joined the army about this time, doubtless received a hint of this expedition before he left New Haven, for the moment he arrived at Cambridge with the company of which he was captain, he presented himself before the Committee of Safety, and proposed a similar expedition in the same direction. He made the thing appear so feasible, May 3, 1775that the committee eagerly accepted his proposal, granted him a colonel's commission, and gave him the chief command of troops, not exceeding four hundred in number, which he might raise to accompany him on an expedition against the lake fortresses. Not doubting his success, Arnold was instructed to leave a sufficient garrison at Ticonderoga, and with the rest of the troops return to Cambridge with the arms and military stores that should fall into his possession. He was also supplied with one hundred pounds in cash, two hundred pounds weight each of gunpowder and leaden balls, one thousand flints, and ten horses, by the provincial Congress of Massachusetts. His instructions were to raise men in Western Massachusetts, but, on reaching Stockbridge, he was disappointed in finding that another expedition had anticipated him, and was on its way to the lake. He remained only long enough to engage a few officers and men to follow him, and then hastened onward and May 9, 1775 joined the other expedition at Castleton. He introduced himself to the officers, pulled a bit of parchment from his pocket, and, by virtue of what he averred was a superior commission, as it was from the Massachusetts Committee of Safety, claimed the supreme command. This was objected to, for he came single-handed, without officers or troops; and the soldiers, a large proportion of whom were Green Mountain Boys, and who were much attached to Allen, declared that they would shoulder their muskets and march home rather than serve under any other leader. Arnold made a virtue of necessity, and united himself to the expedition as a volunteer, maintaining his rank, but having no command.