The regiment was formed in 1999 by the amalgamation of three territorial
infantry battalions: 5th Battalion,
Royal Regiment of Fusiliers; 5th Battalion,
The Light Infantry; and 3rd Battalion,
Staffordshire Regiment. The regiment was composed of a headquarters company and five
rifle companies, continuing to use the insignia of the regular regiments to which they were affiliated. Its initial structure was as follows: • HQ Company, at
Wolverhampton • A (Fusilier) Company, at
Sheldon and
Coventry(from HQ and B Companies, 5th Battalion, Royal Regiment of Fusiliers) •
B (Worcestershire and Sherwood Foresters Regiment) Company, at
Kidderminster and
Worcester(from A Company, 5th Battalion, The Light Infantry) • C (Staffords) Company, at
Burton upon Trent(from C Company, 3rd Battalion, Staffordshire Regiment) • D (Staffords) Company, at
Stoke-on-Trent(from B Company, 3rd Battalion, Staffordshire Regiment) • E (Light Infantry) Company, at
Shrewsbury and
Hereford(from HQ and C Companies, 5th Battalion, Light Infantry) Structure prior to re-designation Not long prior to re-designation of a battalion of the
Mercian Regiment, the regiment absorbed the companies from other regiments that were within the new regiment's recruiting area, in order to ease the re-designation process. After this, its structure was as follows: • HQ Company, at Wolverhampton • A (Cheshire) Company, at
Warrington and
Stockport''(from B (Cheshire) Regiment,
King's and Cheshire Regiment)'' • B Company, at Crewe and Stoke-on-Trent''(from D (Cheshire) Company, King's and Cheshire Regiment)'' • C (Worcestershire and Sherwood Foresters Regiment) Company, at
Mansfield(from C (Stafford) Company, West Midlands Regiment; and D (Nottinghamshire and Derbyshire (Worcestershire and Sherwood Foresters Regiment)) Company, East of England Regiment) • D (Staffordshire) Company, at Wolverhampton,
Kidderminster, and Burton upon Trent
(from D (Stafford) Company; and Platoon of B (Worcestershire and Sherwood Foresters Regiment) Company) • F (Fusilier) Company, at
Birmingham(from A (Fusilier) Company) • L Company (Light Infantry), at Shrewsbury
(from E (Light Infantry) Company, less Hereford Platoon to B (Shropshire Yeomanry) Squadron, Royal Mercian and Lancastrian Yeomanry) ==4th Battalion, Mercian Regiment==