Translation guide
The concept of military force can refer to the armed forces as an institution, the use of armed strength, or a specific military unit. Japanese expressions vary depending on whether you mean the military in general, the act of using force, or a particular force.
Referring to a country's army, navy, air force, etc. as a whole.
General term for armed forces or military. Neutral and widely used.
That country has a powerful military force.
Often used in compounds or formal contexts to mean military or army.
He joined the military.
Refers to military strength or troop strength, often in terms of numbers or capability.
The enemy's military force is unknown.
The act of using military strength, often in a political or strategic context.
Formal phrase meaning 'use of military force'. Common in news and political discourse.
The government authorized the use of military force.
Armed force or military power, often used in contexts of conflict or coercion.
Use of armed force, similar to 軍事力の行使 but slightly more direct.
A specific organized body of troops, such as a task force or contingent.
軍隊 is the most common general term for 'military' as an institution. 軍 is often used in compounds (e.g., 空軍 'air force') or formal names. 兵力 emphasizes military strength or troop numbers rather than the organization itself.
English 'military force' can be ambiguous. In Japanese, you must choose between the institution (軍隊), the act (武力行使), or a unit (部隊). Using 力 (ちから) alone would sound unnatural.
The problem cannot be solved by military force.
The UN condemned the use of military force.
大軍勢が城に迫った。
A large military force approached the castle.