In what century were the Royal Marines founded?

The Corps of Royal Marines (RM) is the United Kingdom's amphibious light infantry force, forming part of the Naval Service, along with the Royal Navy. The Royal Marines were formed in 1755 as the Royal Navy's infantry troops. However, the marines can trace their origins back to the formation of the English Army's "Duke of York and Albany's maritime regiment of Foot" at the grounds of the Honourable Artillery Company on 28 October 1664.

The Royal Marines are part of the Naval Service and under the full command of Fleet Commander. The rank structure of the corps is similar to that of the British Army with officers and other ranks recruited and initially trained separately from other naval personnel. Since 2017 women have been able to serve in all roles in the Royal Marines. On average, 1,200 recruits and 2,000 potential recruits, and 400 potential officers attend training courses and acquaint courses at CTCRM every year.