September 18, 1644
September to November 1644 siege of a castle in North Yorkshire, England
Skirmish between Danes and Dutch in Malacca, 1644
1644 siege during the Franco-Spanish War
1644 battle in England; part of the First English Civil War
1644 battle between the Polish-Lithuanian Commonwealth and a horde of Crimean Tatars
1644 English Civil War battle
Battle that took place during the First English Civil War
1644 rebellion in Beijing, China which deposed the Ming dynasty
1644 naval battle of the Danish-Swedish War
1644 battle between Portugal and Spain