French Revolutionary Wars: A French force attempting to dislodge a small British garrison on the Îles Saint-Marcouf is repulsed with heavy losses.

The French Revolutionary Wars were a series of sweeping military conflicts resulting from the French Revolution that lasted from 1792 until 1802. They pitted France against Great Britain, Austria, Prussia, Russia, and several other countries. The wars are divided into two periods: the War of the First Coalition (1792–1797) and the War of the Second Coalition (1798–1802). Initially confined to Europe, the fighting gradually assumed a global dimension. After a decade of constant warfare and aggressive diplomacy, France had conquered territories in the Italian peninsula, the Low Countries, and the Rhineland with its very large and powerful military which had been totally mobilized for war against most of Europe with mass conscription of the vast French population. French success in these conflicts ensured military occupation and the spread of revolutionary principles over much of Europe.

Îles Saint-Marcouf comprise two small uninhabited islands off the coast of Normandy, France. They lie in the Baie de la Seine region of the English Channel and are 6.5 km (4.0 mi) east of the coast of the Cotentin peninsula at Ravenoville and 13 km (8 mi) from the island of Tatihou and the harbour at Saint-Vaast-la-Hougue. In addition to the fortifications described below, on the larger island there is a lighthouse that dates to 1948.

The Battle of the Îles Saint-Marcouf was fought off the Îles Saint-Marcouf on 7 May 1798 during the French Revolutionary Wars. Dislodging a British garrison on the islands was the main objective for French forces. The garrison allowed the islands to serve as a resupply base for Royal Navy ships patrolling northern French waters. Apart from expelling the British, the French sought to test new equipment and tactics, which had allegedly been developed with an intention of invading Britain.