Impressment, colloquially, "the press" or the "press gang", refers to the act of taking men into a navy by force and with or without notice. Navies of several nations used forced recruitment by various means. The large size of the British Royal Navy in the Age of Sail meant impressment was most commonly associated with Britain. It was used by the Royal Navy in wartime, beginning in 1664 and during the 18th and early 19th centuries as a means of crewing warships, although legal sanction for the practice goes back to the time of Edward I of England. The Royal Navy impressed many merchant sailors, as well as some sailors from other nations. People liable to impressment were "eligible men of seafaring habits between the ages of 18 and 55 years". Non-seamen were impressed as well, though rarely.