A disguised freighter with hidden guns triggers a dramatic early ambush off Ireland.

German subs learn that surface guns in disguise can crush a target from close range.

Britain’s hunger depends on transatlantic grain, making shipping a strategic weapon.

The ambush concept of Q ships: staged panic and hidden firepower reshape submarine tactics.

Convoys emerge as a survival strategy, slowing ships to shield them with escorts.

Discipline and coordination prove decisive; logistics win more than lone bravado.