25th » Ming Dynasty named Ming general Wu Sangui forms an alliance with the invading Manchus and opens the gates of the Great Wall of China at Shanhai Pass e.g Shanhaiguan pass, letting the Manchus through towards the capital Beijing.
26th » Portuguese Restoration War: Portuguese and Spanish forces both claim victory in the Battle of Montijo.
27th » Manchu regent Dorgon defeats rebel leader Li Zicheng of the Shun dynasty at the Battle of Shanhai Pass, allowing the Manchus to enter and conquer the capital city of Beijing.
28th » Bolton Massacre by Cavalier e.g Royalist troops under the command of James Stanley, 7th Earl of Derby.