1808 first major battle of the Spanish reconquest of Santo Domingo of the Spanish colonial Captaincy General of Santo Domingo

1808 United States presidential election — 6th quadrennial U.S. presidential election

Siege during the Russo-Persian War in 1808

1808 minor naval battle of the Gunboat War

Naval battle of the English Wars and the Gunboat War fought off Zealand Point, resulting in a victory of the British over the Danish forces

Action of 4 April 1808

Battle on 1808-04-18

1808 battle in Norway

Dos de Mayo Uprising — 1808 rebellion during the Peninsular War

1808 naval battle of the Gunboat War between Denmark-Norway and the United Kingdom

Battle of the Dano-Swedish War of 1808–09