He had never seen a periscope in his life, but he had read about periscopes.
Periscopes from 20 inches to nearly 20 feet in length were produced in quantity.
We would have our snipers on certain days smash all their periscopes.
The enemy was submerged, only the periscopes showing above the surface of the water.
Neither troopship nor destroyer is showing lights, so the Huns ...