The English and French governments were at this time making conflicting claims to the Ohio valley, and their agents were treating with the various Indian tribes.  At length the French prepared to enforce their claim by arms, and Washington received, in 1751, a commission as adjutant-general over a military district of Virginia.  In October, 1753, he was sent by Governor Dinwiddie on a mission to the French commander, from which he returned in the following January; and his conduct on this occasion, when he had to traverse great distances of unknown forest at midwinter, and to cope with the craft of white men and savages alike, marked him out as a youth fitted for the most important civil and military trusts.

Conflicts with the French

Washington was for the first time under fire in April, 1754, when he had been sent, as second in command of the colonial forces, to take charge of a fort on the Ohio.  He fell in with a French party of spies, whom his small force, with Indian assistance, put to flight.  His fort, named Fort Necessity, was defended by three hundred men, but was attacked in July by a greatly superior force of French and Indians, and Washington had to capitulate, marching out with the honours of war.

When it was determined, the same autumn, by the Governor and the British Secretary of State, that the colonial troops should be reduced to independent companies, so that there should no longer be colonial officers above the rank of captain, Washington, in accordance with the dawning republicism of America, resigned his commission, and settling at Mount Vernon, prepared to devote himself to agriculture.  But in 1755, General Braddock was sent out to undertake energetic operations against the French, and Washington accepted the General’s offer of a position on his staff.

It was now that the eminent Benjamin Franklin did such great service to the British arms by organizing transport, and listened with astonishment to Braddock’s anticipations of easy victory.  The young aide-de-camp also warned the English soldier in vain.  On July 9 Braddock’s force was utterly routed by the French and Indians, and the general himself was slain.  This reverse did away with all belief, throughout the colonies, in the power of British arms, and prepared the way for the independence that was to follow.

On August 14 George Washington was appointed to the supreme command of the Virginian forces, with his headquarters at Winchester, and was occupied in the defence of a wide frontier with an insufficient force, until the expedition against Fort Duquesne in 1758, when he planted the British flag on its smoking ruins, and put an end to the French domination of the Ohio.

His marriage to Mrs. Martha Custis, a young and wealthy widow, was celebrated on January 6, 1759; he took his seat in the House of Burgesses at Williamsburg, and established himself at Mount Vernon to develop his estates.  A large Virginia estate, in those days, was a little empire.