Justinian I's Reconquest and the Corpus Juris Civilis (527–565 CE)

1. Justinian crowned co-emperor with Justin I

   Apr 1, 527Labels: Justinian I, Justin I

   Justinian was elevated to the rank of Augustus (co-emperor) alongside his uncle, Emperor Justin I—positioning him to direct policy and later rule as sole emperor.

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2. Justinian becomes sole emperor

   Aug 1, 527Labels: Justinian I

   After Justin I died, Justinian succeeded as sole emperor, beginning the reign associated with major western reconquests and sweeping legal codification.

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3. First Codex Justinianus takes legal effect

   Apr 7, 529Labels: Codex Justinianus

   The first edition of the Codex Justinianus (an official compilation of imperial constitutions) took effect, aiming to consolidate and clarify the authoritative body of imperial law.

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4. Tribonian commissioned to compile the Digest

   Jan 1, 530Labels: Tribonian, Digest

   Justinian tasked the jurist Tribonian and a commission with compiling what became the Digest (Pandects), extracting and organizing authoritative juristic writings into a single work.

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5. Nika revolt erupts in Constantinople

   Jan 1, 532Labels: Nika Riot, Constantinople

   The Nika revolt shook Constantinople and nearly toppled Justinian’s regime; its suppression reshaped imperial authority and set the stage for major rebuilding projects in the capital.

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6. Vandalic War begins: invasion of North Africa

   Jun 1, 533Labels: Vandalic War, Belisarius

   Justinian launched the Vandalic War, sending forces under Belisarius to topple the Vandal Kingdom and restore imperial control in North Africa—an early success of the reconquest program.

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7. Battle of Ad Decimum opens road to Carthage

   Sep 13, 533Labels: Battle of, Belisarius

   Belisarius defeated Vandal forces at Ad Decimum, enabling the rapid occupation of Carthage and accelerating the collapse of Vandal power in Africa.

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8. Battle of Tricamarum ends Vandal resistance

   Dec 15, 533Labels: Battle of, Vandal Kingdom

   A decisive Byzantine victory at Tricamarum effectively ended organized Vandal resistance, completing the conquest of the Vandal Kingdom’s core territories.

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9. Gelimer surrenders; Africa restored to empire

   Mar 1, 534Labels: Gelimer, Byzantine Africa

   Vandal king Gelimer surrendered, marking the formal end of the Vandal Kingdom and consolidating Byzantine rule in North Africa as part of Justinian’s reconquest.

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10. Revised Codex (second edition) promulgated

    Nov 16, 534Labels: Codex Justinianus, Justinian I

    Justinian promulgated the revised Codex repetitae praelectionis (second edition of the Codex), updating and superseding the 529 version to incorporate subsequent legislation and corrections.

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11. Gothic War begins against the Ostrogoths

    Jan 1, 535Labels: Gothic War, Ostrogoths

    Justinian opened the long Gothic War to reclaim Italy from Ostrogothic rule—an extended, costly campaign central to his western reconquest ambitions.

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12. Hagia Sophia consecrated in Constantinople

    Dec 27, 537Labels: Hagia Sophia, Constantinople

    The rebuilt Hagia Sophia was inaugurated, becoming the empire’s premier church and a monumental statement of Justinian’s renewed authority after the Nika revolt.

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13. Plague of Justinian begins spreading

    Jan 1, 541Labels: Plague of, Constantinople

    A major pandemic—later called the plague of Justinian—began spreading around the Mediterranean (with major outbreak in Constantinople in 542), straining the empire’s manpower, finances, and campaigns.

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14. Narses defeats Totila at Taginae

    Jul 1, 552Labels: Narses, Battle of

    At the Battle of Taginae (Busta Gallorum), the Byzantine general Narses defeated the main Ostrogothic army under King Totila—one of the decisive turning points in the reconquest of Italy.

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15. Second Council of Constantinople convenes

    May 5, 553Labels: Second Council, Three Chapters

    Justinian convoked the Second Council of Constantinople (the fifth ecumenical council), which met from 5 May to 2 June 553 amid the Three Chapters controversy, shaping imperial religious policy and church politics.

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16. Pragmatic Sanction reorganizes governance of Italy

    Aug 13, 554Labels: Pragmatic Sanction, Italy

    Justinian issued the Pragmatic Sanction for Italy, laying out administrative and legal arrangements for the recovered peninsula and attempting to stabilize postwar governance.

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    • Hodgkin UChicago

17. Justinian dies; reign and program conclude

    Nov 14, 565Labels: Justinian I, Corpus Juris

    Justinian died after a reign marked by major territorial reconquests and the creation of the Corpus Juris Civilis, leaving a legal legacy that profoundly shaped later Byzantine and European legal traditions.

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