Heraclius

Lore & Background

Heraclius's reign was marked by wars against the Persians and the Arabs. He took charge of the Byzantine–Sasanian War of 602–628 upon his accession, but his leadership initially did little to stem Persian ascendency; after personally losing the Battle of Antioch (613), the Persians took Syria and Egypt, reducing the Empire to Asia Minor. He avoided total defeat and initiated reforms to rebuild the military. He drove the Persians out of Asia Minor and defeated them in 627 at the Battle of Nineveh. The Persian Shah Khosrow II was overthrown and executed by his son Kavad II, who sued for peace, agreeing to withdraw from all occupied territory. Heraclius won the war, but his Empire was deeply strained. He soon lost many regained lands to the Rashidun Caliphate. In 636, the Arabs marched into Syria, defeating Heraclius's brother Theodore. Within a short period, the Arabs conquered Mesopotamia, Armenia, and Egypt. Heraclius responded with reforms that allowed his successors to combat the Arabs. He entered diplomatic relations with the Serbs in the Balkans. He tried to repair the schism in the Christian church regarding non-Chalcedonians by promoting monothelitism; this project of unity was rejected by all sides. During his reign, Greek became the official language of the state, replacing Latin. Heraclius married Fabia (Eudokia) in 610; after her death in 612, he married his niece Martina in 622 or 623, despite scandal. In 608, Heraclius the Elder renounced loyalty to Phocas. The younger Heraclius sailed eastward; when he reached Constantinople, the Excubitors deserted to him, and he entered without serious resistance. He captured Phocas, asked him a question, and beheaded him.

Reader's Guide

Heraclius’s reign was defined by two major military struggles: the final phase of the long war with the Sasanian Empire and the sudden emergence of the Arab conquests. Upon taking power, he personally led the Byzantine effort in the conflict with Persia, but his early campaigns faltered; after his defeat at Antioch, the Persians seized Syria and Egypt, reducing Byzantine territory largely to Asia Minor. Rather than collapse, Heraclius undertook reforms to rebuild the army, eventually driving the Persians from Asia Minor and winning a decisive victory at Nineveh. This forced the Persian shah’s overthrow and a peace treaty that returned all occupied lands, though the empire was left deeply exhausted. Soon after, the Rashidun Caliphate emerged from Arabia, rapidly conquering the Sasanian realm and then moving into Syria, where Heraclius’s brother was defeated. Within a short time, the Arabs took Mesopotamia, Armenia, and Egypt. Heraclius responded with further reforms that enabled his successors to resist the Arabs and avoid total destruction. He also engaged in diplomacy with the Serbs in the Balkans and attempted to heal the Christian church’s schism over non-Chalcedonian doctrine by promoting monothelitism, involving the Church of the East, but this compromise was rejected by all sides. During his reign, Greek, already widely spoken, became the empire’s official language, replacing Latin. His military and administrative changes were crucial for the empire’s survival into the medieval period.

Did You Know?

• Heraclius personally led the counterattack that defeated the Persians at the Battle of Nineveh in 627.
• The Persian Shah Khosrow II was overthrown and executed by his own son Kavad II after Heraclius's victory.
• Heraclius promoted monothelitism as a compromise doctrine to heal the Christian church schism, but it was rejected by all sides.
• During Heraclius's reign, Greek replaced Latin as the official language of the Byzantine state.