1939 ⟶ Germans Begin Mining British Waters
The Germans begin what will be the systematic mining of the ...Year
1939
💣 Germans Begin Mining British Waters
The Germans begin what will be the systematic mining of the British waters by the mining of Portland Harbour.⟶

GermanyNaval WarfareSubmarine WarfareMiningBritish WatersPortland Harbour1939
🇩🇪 German U-boats Ordered to Attack British Ships
German authorities order U-boats to immediately take action against all British ships, but sparing French ships and in strict observance of prize rules.⟶

GermanyU-boatsNaval WarfareAtlantic OceanWorld War IIWar DeclarationSubmarine Warfare