Dorgon vs Muawiyah I

Upon the death of Hong Taiji, Dorgon was appointed as regent for the young Shunzhi Emperor. This position gave him effective control over the Qing government and military, enabling him to direct the conquest of Ming China.

Dorgon allied with Ming general Wu Sangui to defeat Li Zicheng's rebel forces at Shanhai Pass. This victory allowed Qing forces to enter Beijing and establish the Qing dynasty as the ruling power in China.

Dorgon led Qing forces in a campaign against the Southern Ming regime, capturing Nanjing and defeating the Hongguang Emperor. This campaign extended Qing control over the Yangtze River valley and weakened Ming loyalist resistance.

Dorgon mandated that all Chinese men adopt the Manchu queue hairstyle as a sign of submission to Qing rule. This policy caused widespread resentment and resistance, but was enforced to consolidate Qing control over Han Chinese subjects.

Dorgon died suddenly while hunting. After his death, the Shunzhi Emperor accused him of plotting to usurp the throne, stripped him of all titles, and had his corpse mutilated. This posthumous purge reflected court factional struggles.

Muawiyah I was appointed governor of Syria by Caliph Umar. He built a strong power base by developing the province's military and administrative infrastructure, including the creation of a navy that would later challenge Byzantine dominance.

Muawiyah launched naval expeditions against the Byzantine Empire, including the Battle of the Masts (655), where the Muslim fleet defeated the Byzantine navy. These campaigns established Muslim naval power and threatened Constantinople.

Muawiyah led the Syrian army against Caliph Ali at Siffin, demanding justice for Uthman's murder. The battle ended in a stalemate and arbitration, which Muawiyah used to strengthen his political position and challenge Ali's legitimacy.

After Ali's assassination, Muawiyah I established the Umayyad Caliphate, moving the capital from Medina to Damascus. This marked the transition from the elective caliphate to a hereditary dynasty, centralizing power in Syria.

Muawiyah I ordered a prolonged siege of Constantinople, using a large fleet and army. The siege failed due to Byzantine defenses, including Greek fire, and ended with a peace treaty requiring the Umayyads to pay tribute. It was a rare setback.

Muawiyah I designated his son Yazid as his successor, breaking the tradition of election and establishing hereditary succession. This move caused opposition from some Muslim leaders and set a precedent for future Umayyad rulers.