force of 36 men, led by Ensign Edward Ward in Trent's absence, agreed to leave the site. The French then began construction of the fort they called Fort Duquesne. Prelude In March 1754, Governor Dinwiddie ordered Washington back to the frontier with instructions to "act on the [defensive], but in Case any Attempts are made to obstruct the Works or interrupt our [settlements] by any Persons whatsoever, You are to restrain all such Offenders, & in Case of resistance to make Prisoners of or kill & destroy them". Historian Fred Anderson describes Dinwiddie's instructions, which were issued without the knowledge or direction of the British government in London, as "an invitation to start a war". Washington was ordered to gather up as many supplies and provincial troops as he could along the way. By the time he left for the frontier on April 2, he had recruited fewer than 160 men. Along their march through the forests of the frontier, Washington was joined by more men at Winchester. At this point he learned from Captain Trent of the French advance. Trent also brought a message from Tanacharison, who promised warriors to assist the British. To keep Tanacharison's support, Washington decided not to turn back, choosing instead to advance. He reached a place known as the Great Meadows (now in Fayette County, Pennsylvania), about south of the forks, began construction of a small fort and awaited further news or instructions. Contrecœur operated under orders that forbade attacks by his force unless they were provoked. On May 23, he sent Joseph Coulon de Villiers de Jumonville with 35 soldiers (principally Canadien recruits) to see if Washington had entered French territory, and with a summons to order Washington's troops out; this summons was similar in nature to the one Washington had delivered to them four months earlier. On May 27, Washington was informed by Christopher Gist, a settler who had accompanied him on the 1753 expedition, that a Canadien party numbering about 50 was in the area. In response, Washington sent 75 men with Gist to find them. That evening, Washington received a message from Tanacharison, informing him that he had found the Canadien camp, and that the two of them should meet. Despite the fact that he had just sent another group in pursuit of the Canadiens, Washington went with a detachment of 40 men to meet with Tanacharison. The Mingo leader