YOU SAID:

protect yourself behind the battlements from enemies' shots

INTO JAPANESE

敵のショットから胸壁の後ろに身を守る

BACK INTO ENGLISH

Protect yourself in the back of the chest wall from enemy shots

INTO JAPANESE

敵のショットから胸壁の後ろに身を守る

BACK INTO ENGLISH

Protect yourself in the back of the chest wall from enemy shots