Still further accessions were now made to these English forces by large reinforcements from the mother country, while the Canadians received little or no assistance from France; nevertheless they prolonged the war till 1760, forcing the English to adopt at last the slow and expensive process of reducing all their fortifications.

This will be shown in the following outline of the several campaigns.
Very early in 1755, a considerable body of men was sent from Great Britain to reinforce their troops in this country.

These troops were again separated into four distinct armies.

The _first_, consisting of near two thousand men, marched to the attack of Fort Du Quesne, but was met and totally defeated by one-half that number of French and Indians.
The _second_ division, of fifteen hundred, proceeded to attack Fort Niagara by way of Oswego, but returned without success.

The _third_, of three thousand seven hundred men, met and defeated Dieskau's army of twelve hundred regulars and six hundred Canadians and Indians, in the open field, but did not attempt to drive him from his works at Ticonderoga and Crown Point.