Refers to the aerial warfare branch of a nation's military.
彼は空軍に入隊した。
He enlisted in the air force.
空軍基地が近くにある。
There is an air force base nearby.
The United States Air Force is one of the largest in the world.
My older brother joined the air force after finishing high school.
The government dispatched the air force for the relief operation.
air force base; air base
air force captain