List of 1645 Major News Events in History, Most Important Historical Events in 1645
| Date | Event |
|---|---|
| January 10, 1645 | Archbishop William Laud is beheaded for treason at the Tower of London. |
| February 2, 1645 | Scotland in the Wars of the Three Kingdoms: Battle of Inverlochy. |
| May 20, 1645 | Yangzhou massacre: The ten day massacre of 800,000 residents of the city of Yangzhou, part of the Transition from Ming to Qing. |
| June 14, 1645 | English Civil War: Battle of Naseby: Twelve thousand Royalist forces are beaten by fifteen thousand Parliamentarian soldiers. |
| July 2, 1645 | Battle of Alford: Wars of the Three Kingdoms. |
| July 10, 1645 | English Civil War: The Battle of Langport takes place. |
| July 21, 1645 | Qing dynasty regent Dorgon issues an edict ordering all Han Chinese men to shave their forehead and braid the rest of their hair into a queue identical to those of the Manchus. |
| July 30, 1645 | English Civil War: Scottish Covenanter forces under the Earl of Leven launch the Siege of Hereford, a remaining Royalist stronghold. |
| August 3, 1645 | Thirty Years' War: The Second Battle of Nördlingen sees French forces defeating those of the Holy Roman Empire. |
| August 13, 1645 | Sweden and Denmark sign Peace of Brömsebro. |
| September 1, 1645 | English Civil War. Scottish Covenanter forces abandon their month-long Siege of Hereford, a Cavalier stronghold, on news of Royalist victories in Scotland. |
| September 13, 1645 | Wars of the Three Kingdoms: Scottish Royalists are defeated by Covenanters at the Battle of Philiphaugh. |
| September 24, 1645 | The Battle of Rowton Heath in England is a Parliamentarian victory over a Royalist army commanded in person by King Charles. |
| October 8, 1645 | Jeanne Mance opens the first lay hospital of North America in Montreal. |