Braddock undertook the expedition against fort Duquesne, which if successful would break down the barrier which was confining the English colonies to the Atlantic seaboard, and relieve the more westerly settlements of Virginia and Pennsylvania from the harassing attacks which were making life on the frontiers unendurable. The execution of his part of the campaign was beset by difficulties, arising partly from the mountainous and woody character of the country through which he had to pass, and partly from his ignorance of the methods of forest warfare, in which his enemies excelled. Whatever could be accomplished by dogged energy was done successfully. Braddock managed to get his army within sight of his destination. But here his good fortune left him. While still in the thick woods he was attacked by the French and their Indian allies. Employing methods to which Braddock was a stranger, methods which would have seemed to him to be unworthy of soldiers, the French and their allies managed to keep themselves in perfect cover, while the British army stood exposed, the easiest of marks. There could be but one outcome. The British were overwhelmed and Braddock slain; and the only result of the campaign was to redouble the fury of the enemy against the unfortunate border settlements. The disaster and its consequences were brought home to the government with a directness that put an end to all hesitation about establishing the closest possible communication between the mother country and the colonies. On the 18th of September, the board of trade, which administered the affairs of the colonies, approached the treasury on the subject. After emphasizing the inconveniences of the existing arrangements, the board insisted that it was of the highest importance that the king should have "early and frequent intelligence of what is in agitation" in the colonies, and recommended that packet boats be established to New York.[60] The treasury approved, and directed the postmasters general to arrange for regular monthly trips to New York, and to restore the West Indian service, which was discontinued in 1749. Four vessels of 150 tons each were provided for the latter route.[61] They were to carry twenty-six men each, and be fully armed for war. For the New York route, larger vessels were thought necessary, owing to the roughness of the winter seas; the vessels placed on this line were each of 200 tons, and carried thirty men. The carrying of any merchandise was forbidden, so that the vessels were devoted entirely to the service of the post office.