How to say "army" in Japanese

Choosing the right word
  • 軍ぐんJLPT N3approx.Common
    nounThe broad word for a country's armed forces; it covers 'army' in the general sense of military power or troops as a whole, and is the natural choice when no particular branch is meant.
    我わが軍ぐんはその王国おうこくを襲おそった。↗
    Our army attacked the kingdom.
  • 陸軍りくぐんCommon
    nounRefers specifically to the land branch of a nation's military, the ground forces, as opposed to the navy or air force; choose it when English 'army' names that branch.
    戦時せんじ中ちゅう、彼かれは陸軍りくぐんに所属しょぞくしていた。↗
    During the war, he served in the army.
  • 軍勢ぐんぜいCommon
    nounCovers a force of troops, and can also mean the number of soldiers; use it when speaking of a host of troops and its size, not the army as an institution.
    ナポレオンの軍勢ぐんぜいは今いまや進撃しんげきし、大おおきな戦たたかいが始はじまる。↗
    Napoleon's army now advanced and a great battle begins.
  • 兵へいCommon
    nounReally points to soldiers or troops, the fighting men, rather than the army as an institution, so it is seldom the word you want when English says 'army'.
    軍ぐんはその町まちから兵へいを引ひいて敵てきに明け渡あけわたした。↗
    The army abandoned the town to the enemy.

Use 軍 for armed forces generally, 陸軍 when 'army' means the land branch, 軍勢 for a body of troops with its size in view, and 兵 for troops or soldiers rather than the army as an institution.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

Japanese equivalents
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JLPT vocabulary levels are community estimates, not official (no official lists have been published since the 2010 revision).

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