Battle of Majorca
1936 CE.
Shown on the map at 39.617°, 2.983°.
The Battle of Mallorca, also known as the Mallorca Landings, was an amphibious landing of Republican forces in 1936, early in the Spanish Civil War, aimed at driving the Nationalists from Mallorca and reclaiming the island for the Republic. After some initial tactical success, the expedition, commanded by Captain Alberto Bayo, ended in failure when the Nationalists counterattacked with ground troops and massively superior air power and drove the Republicans into the sea. So confident were the Republicans in their prediction of victory they optimistically called the operation "la reconquista de Mallorca" - "the reconquest of Mallorca".
Text from the Wikipedia article Battle of Mallorca, licensed CC BY-SA 4.0.