l*********o
发帖数: 3091 | 1 【 以下文字转载自 Military 讨论区 】
发信人: liangmaomao (Amy Bishop 拿不到tenure就杀人的生物AP), 信区: Military
标 题: 和美国相比，日本才是仁义之师，讲信用
发信站: BBS 未名空间站 (Mon Sep 15 02:21:07 2014, 美东)
美国潜艇对日本商船无差别打击。比如对马丸。
日本潜艇放过美国商船，只打击军用船只。
http://en.wikipedia.org/wiki/Pacific_War#Submarine_warfare
Allied submarines did not adopt a defensive posture and wait for the enemy
to attack. Within hours of Pearl Harbor, Roosevelt promulgated a new
doctrine: unrestricted submarine warfare against Japan. This meant sinking
any warship, commercial vessel, or passenger ship in Axis-controlled waters,
without warning and without help to survivors.[nb 9]
Allied surface fleets and aircraft gave good protection to Allied submarine
bases.
While Japan had a large number of submarines, they did not make a
significant impact on the war. In 1942, the Japanese fleet subs performed
well, knocking out or damaging many Allied warships. However, Imperial
Japanese Navy (and pre-war U.S.) doctrine stipulated that only fleet battles
, not guerre de course (commerce raiding) could win naval campaigns. So,
while the US had an unusually long supply-line between its west coast and
frontline areas, leaving it vulnerable to submarine attack, Japan used its
submarines primarily for long-range reconnaissance and only occasionally
attacked U.S. supply-lines. The Japanese submarine offensive against
Australia in 1942 and 1943 also achieved little.[71]
As the war turned against Japan, IJN submarines increasingly served to
resupply strongholds which had been cut off, such as Truk and Rabaul. In
addition, Japan honored its neutrality treaty with the Soviet Union and
ignored U.S. freighters shipping millions of tons of war-supplies from San
Francisco to Vladivostok,[72] much to the consternation of its German ally. | d*b
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