New answers tagged naval
In order for the Allies, specifically in this case England, to create a naval blockade against the Axis--Germany in the north--it was practical for England to cover as much area as possible without physically being present with warships. During WWII Germany had solidified it's reach to the Netherlands, Poland, northern France, Belgium, Denmark, and Norway. ...
The initial British/French mining in the channel was as an anti-submarine barrage. Later anti-invasion fields were laid. Later in the war offensive fields were laid on the other side of the channel. Details of RN mine laying in WW2 may be found here
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