I believe he was a Colonel
Bouquet came to America in the spring of 1756 and had much success in recruiting men among the German settlers of Pennsylvania and Maryland, so that the Royal American Regiment became in large part a Pennsylvania German regiment. When he marched into Philadelphia on December 10, 1756, with 547 men and officers to be quartered there, he had much difficulty in finding shelter for them, and he longed for the arrival of a superior officer to relieve him "of political matters and of any business with the civil authorities." But he was to find that the problems were not insurmountable, and he must have handled matters much more tactfully than his irate letters would suggest, for good relations were maintained between the military and civil authorities.
In 1757 Colonel Bouquet was sent with a Royal American detachment to Charleston, South Carolina, where he strengthened and improved the defenses of the southern colony. In 1758, however, he was recalled to Pennsylvania. The plans of William Pitt and the British government had begun to take shape for an expedition to capture French Fort Duquesne at the forks of the Ohio, the site of modern Pittsburgh. The Swiss military expert was made second in command under Brigadier General John Forbes in this campaign to drive the French from western Pennsylvania and the Ohio country.
General Forbes, however, was a sick man, suffering from a fatal illness which was to end his life a few months after his victorious campaign. Most of the actual supervision and attention to details in organizing and carrying on the campaign devolved on Bouquet, and no small part of its success was due to his executive ability, his care in training the men, and his patient but firm handling of the supply services. With inexperienced provincial officers and soldiers unaccustomed to military regulations, with teamsters and farmers resentful of any effort to make them help the government even in their own defense, he yet managed to form and supply an effective striking force. Through a wilderness crossed only by Indian paths, Bouquet directed the building of the great Forbes Road over the Allegheny Mountains. Along this line of communications from Carlisle to the Ohio, he supervised the construction of a chain of forts. There were temporary alarms and setbacks. On September 14, 1758, a detachment under Major James Grant, which had been sent to reconnoiter near Fort Duquesne, was drawn into battle and disastrously defeated; and on October 12 the French attacked Fort Ligonier, but were driven off after two hours of fighting. Careful preparations, nevertheless, built up a British force so overwhelming that when it made a final dash toward Fort Duquesne, the French abandoned and burned their stronghold. British advance troops occupied the ruined fort on November 24, 1758; and, two days later, General Forbes renamed it Pittsburgh in honor of the great British statesman.
After the successful campaign, Colonel Bouquet had the problem of digging in, fortifying, bringing supplies, and expanding the foothold on the Ohio country. In the summer of 1759 the French abandoned their forts in northwestern Pennsylvania, and in July 1760, Bouquet led an army of five hundred men northward to build new British forts at Presque Isle (now Erie) and Le Boeuf (now Waterford), while a smaller detachment under Major Robert Stewart built Fort Venango at present Franklin. Bouquet returned to Fort Pitt in November, with his reputation enhanced by this successful expedition.
Ense petit placidam sub libertate quietem - By the Sword We Seek Peace, But Peace Only Under Liberty
-Massachusetts state motto-
"The army is the true nobility of our country."
-Napoleon III-