U-boat warfare (1914-1918) (7 dic 1909 año – 15 feb 1919 año)
Descripción:
were on a mission to destroy merchant vessels carrying supplies to allied forces in order to hinder their war efforts. Aided by intelligence reports on the location, destination, and speed of merchant vessels, the U-boats would search the seas for victimsAñadido al timeline:
fecha:
7 dic 1909 año
15 feb 1919 año
~ 9 years and 2 months