books open submarine warfare
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Source: wikipedia.org
حرب الغواصات المفتوحة (Info)
حرب الغواصات المفتوحة (بالإنجليزية: Unrestricted submarine warfare) هي نوع من الحروب البحرية التي تُغرق فيها الغواصات السفن مثل سفن البضائع وناقلات السفن بدون أن تُعطي أي إنذار.
