Signed on 1621 were Valtelline was restored to the Bund and Protestants in the region were given religious freedoms

Battle of Fort Zhenjiang

Military conflict in Spring 1621

1621 siege during the Huguenot rebellions

1621 military investment during the Huguenot rebellions

Battle of the Thirty Years'War, 1621

1621 naval battle in the Eighty Years' War