Estonian tribes defeated Sweden in the Battle of Lihula.
Source
During the Battle of Princeton, British forces were defeated in New Jersey by George Washington's revolutionary army.
The Battle of Somme began.
The Treaty of Granada was signed, marking the end of the Grenada War, which started in 1482.
The Ottoman Empire signed the Treaty of Adrianople with Russia, which ended the Russo-Turkish War.
The Battle of Wofla between the Turkish and Portuguese occurred.
