What does 海軍 mean?
海軍 is a Japanese noun meaning “navy; naval force” in English. It is written as 海軍 in kanji, かいぐん in hiragana, and kaigun in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
彼らはパイロットに海軍のヘリコプターを操縦させた。
They made the pilot fly the Navy helicopter.