All of this began to look very much like a fresh outbreak of war between England and France; but more and worse was to follow before a formal declaration of war was made in 1756. The Duke of Cumberland, son of George II, then Captain General of the British Armies, laid plans for a great American campaign which, once for all, was to cripple the French power in the west. Three expeditions were devised against French strategic strongholds on the American continent: One was to proceed against Crown Point on Lake George, a second against Fort Niagara and the third to capture the newly erected Fort DuQuesne. Major-General Edward Braddock, a veteran soldier thoroughly trained on Europe's battlefields, of unquestioned personal courage but abysmally ignorant of Indian warfare, was vested with the supreme command and with two British regiments, the 44th and 48th, set sail for America. The expedition landed at Alexandria where a general conference was immediately called at which were present, in addition to Braddock, Governor Dinwiddie of Virginia, Governor Delancey and Colonel William Johnson of New York, Governor Shirley of Massachusetts, Governor Sharp of Maryland, Governor Morris of Pennsylvania and other leaders. To these men Braddock revealed his orders and plans and the governors received the King's instructions as to the part they were to play in the campaign.

Alexandria was a poor starting point for Fort DuQuesne. Far better would have been Philadelphia, offering as it did not only a shorter route but more abundant and easily available supplies. Maryland interests, seeking the advantage of the highway to the west which the army would make, brought pressure to bear to have the force go through that Colony. It was finally decided to send a part of the troops through Maryland and a part through Virginia, the divided army to come together again at Will's Creek where, in the meanwhile, a large and strongly palisaded fort had been built by Colonel James Innes under the instructions of Governor Dinwiddie. A force of 1,400 Virginians and Marylanders was raised and added to the English troops and "on the 8th and 9th of April the provincials and six companies of the 44th under command of Sir Peter Halkett set out for Winchester, Lieutenant Colonel Gage and four companies remaining to escort the artillery. On the 18th of April the 48th, under Colonel Dunbar, set out for Frederick."[64] Although General Braddock, with Major Washington on his staff, crossed over into Maryland at Rock Creek and went to Will's Creek through that Colony, never entering or even seeing the embryo Loudoun, the local stories are still repeated, and with the utmost confidence, of the route he followed through that County and even where he spent the night. It was, as it still is, "Braddock's Army" in popular parlance and, as time passed, the commander's presence with the march through Virginia became a part of its story.

Legends of Loudoun — Part 63