be on guard duty – Russian translation

нести караул; нести караульную службу (The main witness was Earl Morrison, at that time serving with the US 1st Division Marine Corps. At 1--1.30 a.m. on a still night he was on guard duty with two other men and they were sitting on top of a bunker, talking and looking around. (Janet & Colin Bord, "Unexplained Mysteries of The 20th Century") ART Vancouver); стоять в карауле (4uzhoj); стоять на часах