In the 17th century, during a short peace between the French and the Iroquois, the French, with the Iroquois' permission (or even invitation, I'm not sure anymore), built a fort in the middle of the Iroquois heartland, close, if I recall correctly, to their capital.
The French were hopeful of a longterm peace and close friendship. But they learned from clergy who were among the Iroquois that there was a conspiration to kill all the French in a surprise attack.
The French in the fort were absolutely outnumbered and had no hope to survive even knowing of the attack.
So they worked each day to build a boat with which they'd flee on the river. Whenever Iroquois came to the fort, they hid the boat behind a false wall.
On the day before the attack, with the boat completed, as they knew the indigenous people had a tendency to fall asleep after eating a lot during feasts, they organized a feast and cooked a lot of food for the Iroquois. When predictably they fell asleep, they ran away with the boat and fled on the river to relative safety in their colonies on the St. Lawrence.