OWI's report last week that U.S. merchant-marine casualties in one year of war had reached 3,200 or 3.8% of the crews* underlined the gravity of the U-boat campaigna campaign which may yet stalemate the war and will certainly delay final Allied victory.
The greatest submarine fleet the world has known is now operating against the lifelines to Russia, Britain, North Africa. Well-informed U.S. and British officials drew a picture of that fleet:
Modern German submarines are as far advanced over the undersea ships of 1914 as modern planes are over planes of World...
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