 Complete the following phrase:  In 1702, during the Great Northern War, the fortress was taken by Russians under Peter the Great in an amphibious assault: 440 Swedish soldiers defended the fort for ten days before surrendering. After heavy artillery fire and 13 hours of fighting inside the fortress, the Swedish commandant finally agreed to capitulate on honorable conditions. The Swedes left the fortress with their flags, rifles and four cannons. The Russian forces numbered 12,500 men and sustained a total of 1,500 casualties, compared to 360 for the Swedes.see 