On French and Indian War era...
Chaldfont-
You would be well advised to check out the real-life stories behind such luminaries as Pontiac, Tecumseh and other Indian nationalists. The greatest failing of the Native resistance to colonial expansion was their inability to unite; many white bastions withstood extensive siege because the Natives lacked the military infrastructure to sustain it. When allied tribes saw the season progressing with little or no progress, they frequently abandoned the battlefield to get their crops planted and harvested before winter. Check out the book Over the Earth I Come for a great account of the Souix Uprising. Another setting that might interest you is the fur trade era of the Pacific Northwest. White trapper and traders, British, French and American Militaries and numerous Indian tribes were forced to cohabitate in a rugged, unexplored land... check out the stories of Jim Bridger, Jed Smith, Lewis and Clark... great potential all around. Good Luck!