acceleration Of R&D on submarines (28 ene 1917 año – 19 mayo 1919 año)
Descripción:
The first world war had broke out and because of it new research and development was forced to take place in order to detect enemy submarines. This was the first time that submarines were used as practical weapons and when new measures were needed to be taken in order to combat them.
Añadido al timeline:
fecha:
28 ene 1917 año
19 mayo 1919 año
~ 2 years and 3 months
Fotos:
![]()