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Battles of the 20th century

1 battles fought in Britain and Ireland in the 20th century, in date order.

Battle of Dublin 1922Irish Civil War

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Battlefield data © Historic England 2026. Contains Ordnance Survey data © Crown copyright and database right 2026. Licensed under the Open Government Licence v3.0. Contains Historic Environment Scotland and OS data © Historic Environment Scotland and Crown Copyright and database right 2026, licensed under the Open Government Licence v3.0. Battle summaries adapted from Wikipedia (CC BY-SA 4.0); images from Wikimedia Commons (credited on each page). Map tiles © OpenStreetMap contributors. Battle details from Wikidata (CC0).