improve: Battle of Adrianople

battles/battle-of-adrianople.md

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 <!-- factbase:fc7830 -->
 # Battle of Adrianople
 
-# Battle of Adrianople
-
 ## Overview
-The Battle of Adrianople (378 CE) was a catastrophic Roman defeat in which the Visigoths destroyed a Roman army and killed Emperor Valens. It is often cited as a turning point signaling the decline of Roman military power. @t[=0378]
+The Battle of Adrianople (9 August 378 CE) was a catastrophic Roman defeat in which a Gothic coalition destroyed a Roman army and killed Emperor Valens. @t[=0378] It is often cited as a turning point signaling the decline of Roman military power, comparable in scale to the defeats at Cannae (216 BCE) and Carrhae (53 BCE). [^3]
 
 ## Key Facts
 - Date: 9 August 378 CE @t[=0378]
-- Location: Adrianople (modern Edirne, Turkey)
-- Belligerents: Eastern Roman Empire vs. Visigoths
-- Commanders: Emperor Valens (Rome, killed), Fritigern (Visigoths)
-- Result: Decisive Visigothic victory [^1]
+- Location: Adrianople (modern Edirne, Turkey), Roman province of Thracia
+- Belligerents: Eastern Roman Empire vs. Gothic coalition (Thervingi Visigoths, Greuthungi/Ostrogoths, Alans)
+- Commanders: Emperor Valens (Rome, killed), Fritigern (Thervingi, d. c. 380 CE)
+- Result: Decisive Gothic victory [^1]
+- Roman losses: Approximately two-thirds of the army (~10,000–20,000 killed), including Valens [^1][^2]
+
+## Background
+The battle was the culmination of the Gothic War (376–382 CE). @t[0376..0382] In 376 CE, Hunnic expansion from the east drove over 200,000 Visigoths (Thervingi) to the Danube frontier, where they received Roman permission to settle in Thrace. @t[=0376] Roman commanders Lupicinus and Maximus exploited the refugees, demanding slaves and weapons in exchange for food. Facing starvation, the Goths revolted under Fritigern. Earlier engagements at Marcianople (376 CE) @t[=0376] and Ad Salices (Battle of the Willows, 377 CE) @t[=0377] failed to suppress Gothic raiding across the Balkans. [^3]
+
+By 378 CE, Valens — who had been campaigning against Persia — returned to Constantinople under pressure from its citizens and marched against Fritigern. His co-emperor in the west, Gratian (son of Valentinian I), was advancing with reinforcements from Gaul but had not yet arrived. [^1]
 
 ## The Battle
-- Valens attacked without waiting for Western reinforcements under Gratian
-- Roman cavalry was routed by a surprise Gothic cavalry charge
-- Roman infantry was surrounded and annihilated
-- ~20,000 Roman soldiers killed, including Valens himself
+- Valens attacked without waiting for Gratian's western reinforcements, reportedly driven by jealousy of his nephew's military successes [^1][^3]
+- Fritigern sent peace envoys on the morning of battle — historians regard this as a stalling tactic to await the return of ~10,000 Greuthungi cavalry who were away foraging [^1][^3]
+- Roman cavalry on the left flank was routed when the Greuthungi arrived and struck unexpectedly
+- Roman infantry, already exhausted from an eight-mile march in August heat without food or water, was surrounded and annihilated [^1]
+- Valens was mortally wounded; his body was never recovered [^1]
 
 ## Significance
-- Demonstrated the vulnerability of Roman legions to heavy cavalry
-- Led to the Treaty of 382 CE: Visigoths settled within the empire as *foederati* @t[=0382]
-- Often considered a harbinger of the fall of the Western Roman Empire [^2]
+- Demonstrated the vulnerability of Roman legions to heavy cavalry and the dangers of poor scouting and low morale [^2][^3]
+- The Goths lacked siege equipment and could not take Adrianople itself; the Gothic War continued until 382 CE [^3]
+- Led to the Treaty of 382 CE: Emperor Theodosius I settled the Goths within the empire as *foederati*, granting land in exchange for military service @t[=0382] [^2][^4]
+- Alaric, a Visigoth and former Roman commander, sacked Rome in 410 CE — a downstream consequence of the foederati settlement @t[=0410] [^3]
+- Often considered a harbinger of the fall of the Western Roman Empire (476 CE) [^2][^4]
 
 ---
-[^1]: Ammianus Marcellinus, *Res Gestae* 31.12–13
-[^2]: Burns, T.S. *Barbarians Within the Gates of Rome* (1994)---
-
-## Review Queue
-
-<!-- factbase:review -->
-- [x] `@q[missing]` Line 10: "Date: 9 August 378 CE @t[=0378]" - what is the source?
-> Well-established historical date from Ammianus Marcellinus, Res Gestae (Book 31), the primary contemporary source for the battle. Also corroborated by later sources including Orosius and Zosimus.
-- [x] `@q[temporal]` Line 11: "Location: Adrianople (modern Edirne, Turkey)" - when was this true?
-> CE event (378 CE), tagged @t[=0378] on the date line. Attested by Ammianus Marcellinus, *Res Gestae* 31.12 (~390 CE) [^1]; modern confirmation in Burns (1994) [^2].
-- [x] `@q[temporal]` Line 12: "Belligerents: Eastern Roman Empire vs. Visigoths" - when was this true?
-> CE event (378 CE), no additional temporal tag needed beyond the date line. Attested by Ammianus Marcellinus, *Res Gestae* 31.12 (~390 CE) [^1].
-- [x] `@q[temporal]` Line 13: "Commanders: Emperor Valens (Rome, killed), Fritigern (Visigoths)" - when was this true?
-> CE event (378 CE). Attested by Ammianus Marcellinus, *Res Gestae* 31.12-13 (~390 CE) [^1].
-- [x] `@q[temporal]` Line 14: "Result: Decisive Visigothic victory [^1]" - when was this true?
-> CE event (9 August 378 CE). Attested by Ammianus Marcellinus, *Res Gestae* 31.13 (~390 CE) [^1]; modern analysis in Burns (1994) [^2].
-- [x] `@q[temporal]` Line 17: "Valens attacked without waiting for Western reinforcements under Gratian" - when was this true?
-> CE event (9 August 378 CE). Attested by Ammianus Marcellinus, *Res Gestae* 31.12.4-6 (~390 CE) [^1].
-- [x] `@q[temporal]` Line 18: "Roman cavalry was routed by a surprise Gothic cavalry charge" - when was this true?
-> CE event (9 August 378 CE). Attested by Ammianus Marcellinus, *Res Gestae* 31.13.2 (~390 CE) [^1].
-- [x] `@q[temporal]` Line 19: "Roman infantry was surrounded and annihilated" - when was this true?
-> CE event (9 August 378 CE). Attested by Ammianus Marcellinus, *Res Gestae* 31.13.6-8 (~390 CE) [^1].
-- [x] `@q[temporal]` Line 20: "~20,000 Roman soldiers killed, including Valens himself" - when was this true?
-> CE event (9 August 378 CE). Casualty figure is a modern estimate; Ammianus (~390 CE) says two-thirds of the army was lost [^1]. Burns (1994) [^2] provides the ~20,000 figure.
-- [x] `@q[temporal]` Line 23: "Demonstrated the vulnerability of Roman legions to heavy cavalry" - when was this true?
-> Scholarly interpretation, not a dated event. Assessment in Burns (1994) [^2]; also Delbrück, *History of the Art of War*. Some modern historians debate the cavalry emphasis.
-- [x] `@q[temporal]` Line 25: "Often considered a harbinger of the fall of the Western Roman Empire [^2]" - when was this true?
-> Scholarly interpretation. Assessment in Burns (1994) [^2]; also supported by Heather, *The Fall of the Roman Empire* (2006) and Lenski (2002).
-- [x] `@q[temporal]` Line 7: Malformed temporal tag @t[=378] — see docs for valid syntax
-> Fix to @t[=0378]. The temporal tag system requires 4-digit years.
-- [x] `@q[temporal]` Line 10: Malformed temporal tag @t[=378] — see docs for valid syntax
-> Fix to @t[=0378]. The temporal tag system requires 4-digit years.
-- [x] `@q[temporal]` Line 24: Malformed temporal tag @t[=382] — see docs for valid syntax
-> Fix to @t[=0382]. The temporal tag system requires 4-digit years.
-- [x] `@q[missing]` Line 10: "Date: 9 August 378 CE @t[=378]" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.12-13 [^1]. The primary eyewitness account.
-- [x] `@q[missing]` Line 11: "Location: Adrianople (modern Edirne, Turkey)" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.12 [^1]. Well-established location.
-- [x] `@q[missing]` Line 12: "Belligerents: Eastern Roman Empire vs. Visigoths" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.12 [^1].
-- [x] `@q[missing]` Line 13: "Commanders: Emperor Valens (Rome, killed), Fritigern (Visigoths)" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.12-13 [^1].
-- [x] `@q[missing]` Line 17: "Valens attacked without waiting for Western reinforcements under Gratian" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.12.4-6 [^1].
-- [x] `@q[missing]` Line 18: "Roman cavalry was routed by a surprise Gothic cavalry charge" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.13.2 [^1].
-- [x] `@q[missing]` Line 19: "Roman infantry was surrounded and annihilated" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.13.6-8 [^1].
-- [x] `@q[missing]` Line 20: "~20,000 Roman soldiers killed, including Valens himself" - what is the source?
-> Source: Ammianus Marcellinus, Res Gestae 31.13.18 [^1]. Casualty figure is a modern estimate; Ammianus says two-thirds of the army was lost.
-- [x] `@q[missing]` Line 23: "Demonstrated the vulnerability of Roman legions to heavy cavalry" - what is the source?
-> Source: Burns (1994) [^2]; also Delbrück, History of the Art of War. This is a longstanding scholarly interpretation, though some modern historians debate the cavalry emphasis.
-- [x] `@q[missing]` Line 24: "Led to the Treaty of 382 CE: Visigoths settled within the empire as *foederat..." - what is the source?
-> Source: Burns (1994) [^2]; Heather, P. The Fall of the Roman Empire (2006). The treaty of 382 CE is well-attested in Themistius, Orations.
-- [x] `@q[stale]` Line 25: "Often considered a harbinger of the fall of the Western Roman Empire [^2]" - Burns source from 1994 may be outdated, is this still accurate?
-> Burns (1994) remains a standard reference. The interpretation of Adrianople as a turning point is longstanding scholarly consensus, also supported by Heather (2006) and Lenski (2002). Still accurate.
+[^1]: Ammianus Marcellinus, *Res Gestae* 31.12–13 (~390 CE)
+[^2]: Burns, T.S. *Barbarians Within the Gates of Rome*. Indiana University Press, 1994.
+[^3]: Wasson, Donald L. "Battle of Adrianople." *World History Encyclopedia*, 2014. https://www.worldhistory.org/Battle_of_Adrianople/
+[^4]: Heather, Peter. *The Fall of the Roman Empire: A New History of Rome and the Barbarians*. Oxford University Press, 2006.