Fort Détroit was established
Fort Pontchartrain du Détroit, also known as Fort Détroit, was established by the French officer Antoine Laumet de La Mothe in 1701. The site of the old fort is now within the city of Detroit in the American state of Michigan.

Denmark-Norway captured Marstrand from Sweden
The siege of the Swedish harbor town of Marstrand lasted from 6 to 23 July 1677 during the Scanian War. In June 1677 an army under Løvenhjelm marched down through Bohuslän, while a galley flotilla under Ulrik Fredrik Gyldenløve was ordered to take Marstrand. After initial setbacks, batteries were brought up and the town and outworks were captured. Only the Karlsten citadel remained, and when Norwegian guns opened holes in its tower, the commander offered to surrender in return for free withdrawal.

This was accepted.