Atlas of Battles

battle, medieval

Battle of Trans-la-Forêt

Battle of Trans-la-Forêt was a battle fought on 1 August AD 939 at Trans-la-Forêt, in what is now France. The recorded result: Breton victory.

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Map commune FR insee code 35339.png
Map commune FR insee code 35339.png. Map data (c) OpenStreetMap contributors, CC-BY-SA Legend • Shape files infrastructure: railway, highways, water: all ori, CC BY 2.0, via Wikimedia Commons.
Fought1 August AD 939
WhereTrans-la-Forêt, France48.497N, 1.589W
OutcomeBreton victory
BelligerentsBretons; FranksagainstVikings

Record

Date1 August AD 939
PlaceTrans-la-Forêt, France
48.497N, 1.589W
KindBattle, medieval
Commanders
  • Alan II
  • Judicael Berengar
  • Hugh II of Maine
Battle of Trans-la-ForêtBattle of Trans-la-ForêtBattle of PontorsonBattle of DolBattle of La Croix-AvranchinBattle of La Croix-AvranchinBattle of BoucéelBattle of DolBattle of BoucéelLe HavreRennesToursCaenLe MansLorientCherbourgAngers100 km48.497N, 1.589W
The recorded site, with the nearest other engagements in the atlas. Present-day coastlines, rivers and borders; towns from Natural Earth.

Nearest engagements

Elsewhere in AD 939

Battle of Trans-la-Forêt is one of 186 engagements of the 10th century in the atlas and one of 1,495 in present-day France.

Sources

Identity, coordinates, dates and the war from Wikidata Q2890242, released under CC0. Result, belligerents, commanders, strength and casualties from the infobox of the English Wikipedia article Battle of Trans-la-Forêt, revision 1370591422, read 2026-11-14, licensed CC BY-SA 4.0; the article's text is not reproduced here. Present-day country and state from Natural Earth. Dates before 1582 follow the Julian calendar as recorded.