Translation guide
The U.S. Department of Defense is typically referred to by its full Japanese name or the abbreviation 'Pentagon' in news. In casual conversation, it may be explained rather than named.
U.S. Department of Defense
Often called ペンタゴン in news.
Referring to the United States Department of Defense as an organization
Standard Japanese name for the U.S. Department of Defense. Used in formal contexts and news.
The U.S. Department of Defense announced a new policy.
Commonly used in Japanese media to refer to the U.S. Department of Defense, by metonymy. Casual and widely understood.
According to the Pentagon's announcement, the budget will increase.
Abbreviated form using '米' for America. Common in news headlines.
The U.S. Department of Defense issued a statement.
Referring to a ministry or department of defense in any country
Generic term for a ministry/department of defense. Used for countries other than the U.S. or when speaking generally.
That country's defense department introduced new equipment.
Specifically Japan's Ministry of Defense. Not used for other countries. Note: Japan uses '防衛省' (Ministry of Defense) not ''.
国防省 (こくぼうしょう) is the generic term for a defense ministry, used for most countries. 防衛省 (ぼうえいしょう) is the specific name for Japan's Ministry of Defense. Using 国防省 for Japan is incorrect.
Japan's Ministry of Defense is in charge of defense policy.
ペンタゴン is widely recognized and often used in Japanese news to refer to the U.S. Department of Defense. It's acceptable in both formal and informal contexts when the U.S. context is clear.
The Ministry of Defense manages the Self-Defense Forces.