4th Regiment of Foot

Earl of Plymouth's Regiment of Foot 4th (King's Own) Regiment of Foot King's Own (Royal Lancaster Regiment) King's Own Royal Regiment (Lancaster)
Cap badge of the King's Own Royal Regiment (Lancaster).
Active	1680–1959
Country	Kingdom of England (1680–1707)  Kingdom of Great Britain (1707–1800)  United Kingdom (1801–1959)
Branch	British Army
Type	Infantry
Role	Line infantry
Garrison/HQ	Bowerham Barracks, Lancaster
Nickname(s)	Barrell's Blues, The Lions
Colours	Blue Facings, Gold Braided Lace
March	Quick: Corn Riggs are Bonnie Slow: And Shall Trelawny Die?
Engagements	Nine Years' War War of the Spanish Succession Jacobite rising of 1745 Seven Years' War French Revolutionary Wars Peninsular War War of 1812 Napoleonic Wars Crimean War Indian Rebellion of 1857 British Expedition to Abyssinia Anglo-Zulu War Second Boer War World War I World War II

The King's Own Royal Regiment (Lancaster) was a line infantry regiment of the British Army. It served under various titles and fought in many wars and conflicts, including both World War I and World War II, from 1680 to 1959. In 1959, the regiment was amalgamated with the Border Regiment to form the King's Own Royal Border Regiment.

The regiment was raised on 13 July 1680 by Charles FitzCharles, 1st Earl of Plymouth as the 2nd Tangier Regiment or Earl of Plymouth's Regiment of Foot. It saw action at the Battle of Sedgemoor in July 1685 during the Monmouth Rebellion. In April 1690, the regiment embarked for Ireland, where it took part in the Williamite War, fighting at the Battle of the Boyne in July and in the sieges of Cork and Limerick in September, before returning to England in 1691.

The regiment embarked for the Netherlands in March 1692 for service in the Nine Years' War. It saw action at the Battle of Steenkerque in August 1692, the Battle of Landen in July 1693 and at the Siege of Namur in summer 1695. Soon after, it was reformed as a regiment of marines and fought at the Battle of Vigo Bay in October 1702 and the capture of Gibraltar in August 1704 during the War of the Spanish Succession. It ceased to be a regiment of marines in 1711.