A force of 1,400 French soldiers invaded Britain at Fishguard in support of the Society of United Irishmen. They were defeated by 500 British reservists.

The Battle of Fishguard was a military invasion of Great Britain by Revolutionary France during the War of the First Coalition. The brief campaign, on 22–24 February 1797, is the most recent landing on British soil by a hostile foreign force, and thus is often referred to as the "last invasion of mainland Britain".

Fishguard is a coastal town in Pembrokeshire, Wales, with a population of 3,400 as of the 2021 census. Modern Fishguard consists of two parts, Lower Fishguard and the "Main Town". Fishguard and Goodwick are twin towns with a joint Town Council.

The Society of United Irishmen was a sworn association, formed in the wake of the French Revolution, to secure representative government in Ireland. Despairing of constitutional reform, and in defiance both of British Crown forces and of Irish sectarian division, in 1798 the United Irishmen instigated a republican rebellion. Their suppression was a prelude to the abolition of the Irish Parliament in Dublin and to Ireland's incorporation in a United Kingdom with Great Britain.