Battle of the Atlantic (3 sept 1939 año – 8 mayo 1945 año)
Descripción:
 The Battle of the Atlantic was the longest continuous military campaign in World War II, running from 1939 to the defeat of Nazi Germany in 1945, and was a major part of the Naval history of World War II. 
Añadido al timeline:
fecha:
3 sept 1939 año
8 mayo 1945 año
 ~ 5 years and 8 months