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100th (Yeomanry) Regiment Royal Artillery

British army regiment

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionNov 7, 2025
Entity authorityQ4546223 ↗
Source-derived summary

100th (Yeomanry) Regiment Royal Artillery is a reserve unit of the British Army that provides tactical air control parties, naval gunnery liaison officers, specialist staff officers and gunnery instructors.

It was formerly part of the Territorial Army and had three gun batteries all equipped with the L118 Light Gun.

History

First incarnation

The regiment was formed as 100th (Eastern) Medium Regiment Royal Artillery at Grove Park in London in 1967. Its sub-units were RHQ, HQ (Home Counties) Battery at Grove Park, Lewisham, (formed from Regimental HQ of 265th (8th London) Light Anti-Aircraft Regiment, Royal Artillery, together with HQ Royal Artillery of 44th (Home Counties) Division/District), 200 (Sussex Yeomanry) Medium Battery at Brighton, 201 (Hertfordshire and Bedfordshire Yeomanry) Medium Battery at Luton, 202 (Suffolk and Norfolk Yeomanry) Medium Battery at Bury St Edmunds and REME LAD which expanded into a workshop during the FH70 period. In 1970 it became 100th Regiment Royal Artillery and in 1976 it became 100 (Yeomanry) Field Regiment Royal Artillery.

In 1993 200 Battery left the regiment and 307 (South Nottinghamshire Hussars) Battery at Bulwell joined the unit. It was renamed 100 (Yeomanry) Regiment Royal Artillery in 1993 and in 1999, HQ and 202 Batteries left the regiment; 202 was replaced by 266 (Gloucestershire Volunteer Artillery) Battery at Bristol.

The regiment's original role was British Army of the Rhine (BAOR) emergency reinforcement, emphasised by its transfer into 49 Infantry Brigade under part of 2 Division. Under 'Options for Change', the regiment became a general support unit fitted out with the FH-70 155 mm towed howitzer and assigned to 3 Division.

Under Army 2020, this unit was placed in suspended animation and 266 (Gloucestershire Volunteer Artillery) Battery Royal Artillery joined 104th Regiment Royal Artillery.

Editorial summary

Begin with the source’s own compact description: “100th (Yeomanry) Regiment Royal Artillery” is british army regiment. The dossier treats that line as a proposition to test through 100th, Yeomanry and Regiment, not as a finished interpretation.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1967, 1970, 1976, 1993—that can be checked directly. The linked authority record independently contributes the date 1967. For this dossier, 100th, Yeomanry and Regiment is the immediate research focus.
Editorial analysis

Why this record matters

The phrase “british army regiment” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Nov 7, 2025. The linked authority identifier is Q4546223. None of the 2 selected statements returned an explicit reference. The first chronological checks are 1967, 1970, 1976 and 1993.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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Source & attribution

This entry incorporates text from “100th (Yeomanry) Regiment Royal Artillery” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.