The Green Howards , frequently known as the Yorkshire Regiment until the 1920s, was a line infantry regiment of the British Army, in the King's Division. Raised in 1688, it served under various titles until it was amalgamated with the Prince of Wales's Own Regiment of Yorkshire and the Duke of Wellington's Regiment, all Yorkshire-based regiments in the King's Division, to form the Yorkshire Regiment on 6 June 2006.

The Prince of Wales's Own Regiment of Yorkshire was an infantry regiment of the British Army, part of the King's Division. It was created in 1958 by the amalgamation of the West Yorkshire Regiment and the East Yorkshire Regiment. After 48 years service, the regiment was amalgamated again, this time with two other Yorkshire regiments. It became the 1st Battalion of the Yorkshire Regiment, with the Green Howards forming the 2nd Battalion and the Duke of Wellington's Regiment forming the 3rd Battalion on 6 June 2006. Following further merges, in 2012, the battalion was redesignated as the new 2nd Battalion (2Yorks).