England expects that every man will do his duty
"England expects that every man will do his duty" was a signal sent by Vice-Admiral of the Royal Navy Horatio Nelson, 1st Viscount Nelson from his flagship HMS Victory as the Battle of Trafalgar was about to commence on 21 October 1805.
The Battle of Trafalgar by J. M. W. Turner shows the last three letters of the signal flying from the Victory.
Nelson's signal, "England expects that every man will do his duty", flying from Victory on the bicentenary of the Battle of Trafalgar in 2005
A World War II poster intended to increase industrial production on the home front
International maritime signal flags
International maritime signal flags are various flags used to communicate with ships. The principal system of flags and associated codes is the International Code of Signals. Various navies have flag systems with additional flags and codes, and other flags are used in special uses, or have historical significance.
Two sailing ships dressed overall with their signal flags
Sailor prepares signal flags for operations at sea