| Yeomanry Cavalry | ||
| 1797: | independent troops │ |
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| 1814: | The Essex Yeomanry Cavalry │ |
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| 1828: | disbanded |
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| 1831: | The West Essex Corps of Yeomanry Cavalry │ |
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| 1852: | The West Essex Regiment of Yeomanry Cavalry │ |
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| │ | Formation of the Volunteer Force | |
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| 1860: | │ │ |
1st Essex Mounted Rifle Corps │ |
| 1862: | │ │ |
disbanded |
| 1877: | disbanded |
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| Raised in the Imperial Yeomanry | ||
| 1902: | The Essex Imperial Yeomanry |
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| 1905: | ![]() │ |
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| Creation of the Territorial Force | ||
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| 1908: | The Essex Yeomanry (TF) │ |
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| 1909: | ![]() │ |
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| 1914/ 1918: |
1/1st, 2/1st and 3/1st Essex Yeomanry (TF) │ |
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| 1916: | ![]() │ |
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| 1918: | ![]() │ |
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| Creation of the Territorial Army | ||
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| 1921: | 104th (Essex Yeomanry) Brigade, Royal Field Artillery (TA) │ |
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| 1924: | 104th (Essex Yeomanry) Army Field Brigade, Royal Artillery (TA) │ |
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| 1938: | 104th (Essex Yeomanry) Regiment, Royal Horse Artillery (TA) │ |
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| 1939: | │ │ │ │ |
147th (Essex Yeomanry) Regiment, Royal Horse Artillery │ |
| 1940: | │ │ │ │ |
147th (Essex Yeomanry) Field Regiment, Royal Artillery │ |
| 1946: | suspended animation │ |
suspended animation │ |
| Resurrection of the Territorial Army | ||
| │ | │ | |
| 1947: | 304th Field Regiment, Royal Artillery (Essex Yeomanry) (TA) │ |
disbanded |
| 1954: | 304th (Essex Yeomanry) Medium Regiment, Royal Artillery (TA) │ |
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| 1955: | 304th (Essex Yeomanry R.H.A.) Medium Regiment, Royal Artillery (TA) │ |
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| 1956: | 304th (Essex Yeomanry R.H.A.) Field Regiment, Royal Artillery (TA) │ |
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| 1963: | ![]() │ |
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| Creation of the Territorial and Army Volunteer Reserve | ||
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| 1967: | disbanded and formed The Essex Yeomanry (R.H.A.) Royal Artillery (Territorials) │ |
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| 1969: | reduced to cadre as The Essex Yeomanry (R.H.A.) │ │ │ |
some personel formed 4th Regional (Essex Yeomanry) Squadron, 71st (Yeomanry) Signal Regiment, Royal Signals |
| 1975: | disbanded | |