July 26, AD 811

Battle of Pliska

Bulgar ambush kills Emperor Nikephoros I

Nikephoros died so chaotically that the chronicler admitted nobody could say how the emperor was killed.

An attack at dawn

After invading Bulgaria in 811 and burning Krum's wooden royal compound, Nikephoros's dispersed army ran into Bulgar-built timber barriers and a moat in mountainous terrain.

The anonymous Chronicle of 811 says the Bulgars watched from the mountains and attacked at dawn while the Byzantine soldiers were sleeping, striking the emperor's camp first.

Modern reference works commonly date the disaster to 26 July, while the surviving English translation of that chronicle assigns its dawn attack to 23 July.

Between the swamp and the wall

Byzantine fugitives were caught between a swampy river and the fortified barrier. The account describes men drowning, being trampled, falling into the moat, or being burned when part of the barrier caught fire.

Nikephoros I was killed there; the near-contemporary account says no one could say precisely how.

The battlefield itself is disputed. Vărbitsa, Kotel, Riš and other passes and gorges have been proposed, and Vărbitsa is conventional rather than proven.

An emperor carried home on a litter

His son and co-emperor Staurakios escaped with a grave spinal wound. He was proclaimed emperor at Adrianople and transported to Constantinople on a litter.

His nominal reign lasted about two months — one calculation gives two months and six days — after which Nikephoros's son-in-law Michael Rangabe succeeded as Michael I.

The story that Krum silvered the emperor's skull and had Slavic leaders drink from it comes from Theophanes and later retellings; historians dispute whether it records fact or a Byzantine trope.

Sources

Researched 23 Aug 2026 6 sources not yet audited Date disputed

How this was checked

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Date disputed. Sources disagree about when this happened.

What the sources leave uncertain

Modern reference works commonly date the final disaster to 26 July 811, but the surviving English translation of the anonymous Chronicle of 811 assigns its dawn attack to 23 July. The campaign chronology therefore requires caution.
The exact battlefield is disputed. Proposed locations include Vărbitsa, Kotel, Riš and other passes or gorges; Vărbitsa is conventional, not proven.
The Chronicle of 811 is detailed but moralizing and gives enormous casualty figures for earlier fighting that should not be accepted uncritically.
The skull-cup episode comes from Theophanes and later retellings. It should be reported as a Byzantine claim or tradition, not an archaeologically verified object.