Charles W. Domville-Fife, Submarine Warfare of To-day
“ At any moment the thin blackish-brown hulls of a raiding flotilla from the bases at Zeebrugge and Ostend might slide out of the blueness of the night. The beams of searchlights would momentarily cross and recross the intervening sea and then the guns would mingle their sharp reports with the groans of dying men.To the nerve-racking duties of night patrol in the Straits of Dover they had grown accustomed—indifferent with the contempt born of familiarity—but this did not cause any relaxation of vigilance. The element of surprise is too important a factor in modern war to be treated lightly. ”
