Respuesta :
the first option that says Under the railway bridge I found a group of soldiers—sappers, I think, men in small round caps, dirty red jackets unbuttoned, and showing their blue shirts, dark trousers, and boots coming to the calf

the first option that says Under the railway bridge I found a group of soldiers—sappers, I think, men in small round caps, dirty red jackets unbuttoned, and showing their blue shirts, dark trousers, and boots coming to the calf