On October 7th the expedition left Detroit; before starting the
venerable Jesuit missionary gave the Catholic French who went along his
solemn blessing and approval, conditionally upon their strictly keeping
the oath they had taken to be loyal and obedient servants of the crown.
[Footnote: Haldimand MSS., Series B., Vol. 123, p. 53. Hamilton's letter
of July 6, 1781, containing a "brief account" of the whole expedition,
taken from what he calls a "diary of transactions" that he had
preserved.] It is worthy of note that, while the priest at Kaskaskia
proved so potent an ally of the Americans, the priest at Detroit was one
of the staunchest supporters of the British. Hamilton started with
thirty-six British regulars, under two lieutenants, forty-five Detroit
volunteers (chiefly French), who had been carefully drilled for over a
year, under Captain Lamothe; seventy-nine Detroit militia, under a major
and two captains; and seventeen members of the Indian Department
(including three captains and four lieutenants) who acted with the
Indians. There were thus in all one hundred and seventy-seven whites.
[Footnote: _Do_., Series B., Vol. 122, p. 253, return of forces on Dec.
24th.] Sixty Indians started with the troops from Detroit, but so many
bands joined him on the route that when he reached Vincennes his entire
force amounted to five hundred men. [Footnote: _Do_. Hamilton's letter
of July 6, 1781, the "brief account." Clark's estimate was very close to
the truth; he gave Hamilton six hundred men, four hundred of them
Indians. See State Department MSS., No. 71, Vol. I., p. 247. Papers
Continental Congress. Letter of G. R. Clark to Gov. Henry, April 29,
1779. This letter was written seven months before that to Mason, and
many years before the "Memoir," so I have, where possible, followed it
as being better authority than either.]

Difficulties of the Route.