jan 31, 1917 - Germans Unleash U-Boats
Description:
INFO SOURCE:https://www.history.com/this-day-in-history/germans-unleash-u-boats
Germany announced their resumption of submarine warfare, attacking all ships in the Atlantic. The Germans used U-Boats. U-Boats were submarines that were the most sophisticated at the time, the Germans most dangerous weapon.
2 visuals: Image and video
PHOTO SOURCE:
https://www.britannica.com/technology/U-boat
VIDEO SOURCE:
https://www.youtube.com/watch?v=RCrzaC4aLPg
Added to timeline:
Date:
jan 31, 1917
Now
~ 108 years ago