병사는

the soldier

→ 병사
phrase Rare #25,462
the soldier 병사 means “soldier,” and 는 is the topic marker, often translated as “as for the soldier” or simply omitted in English.
KO: 병사는 용감하게 적진으로 향했습니다.
EN: The soldier bravely headed toward the enemy camp.

남은 병사는 적다

There are few soldiers left.

— 바람계곡의 나우시카 (1984)