Ypiranga incident: A German arms shipment to Mexico is intercepted by the U.S. Navy near Veracruz.

The Ypiranga Incident occurred on April 21, 1914, at the port of Veracruz in Mexico during the Mexican Revolution. Ypiranga was a German steamship that was commissioned to transport arms and munitions to the Mexican federal government under Victoriano Huerta. The United States had placed Mexico under an arms embargo to stifle the flow of weaponry to the war-torn state, then in the throes of civil war, forcing Huerta's government to look to Europe and Japan for armaments.

Veracruz, also known as Heroica Veracruz, is a major port city and municipal seat for the surrounding municipality of Veracruz on the Gulf of Mexico and the most populous city in the Mexican state of Veracruz. The city is located along the coast in the central part of the state, 90 km (56 mi) southeast of the state capital Xalapa.