Unrestricted submarine warfare
unrestricted-submarine-warfare-1752772772217-db4bce
Description
Unrestricted submarine warfare is a type of naval warfare in which submarines sink merchant ships such as freighters and tankers without warning. The use of unrestricted submarine warfare has had significant impacts on international relations in regard to both the First World War and the Second World War. Its history has been dominated by German decision making.
ID: unrestricted-submarine-warfare-1752772772217-db4bce
