noun Date: 1902 a position in the manual of arms in which the butt of the rifle is held in the right hand with the barrel resting on the right shoulder
RIGHT SHOULDER ARMS
Meaning of RIGHT SHOULDER ARMS in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012