North Irish Horse
| Date | Unit | Higher Formation |
| . | . | . |
| . | . | . |
| . | North Irish Horse | . |
| 1947.01.01 | Reconstituted in TA with HQ at Belfast | . |
| . | HQ Squadron at Belfast | . |
| . | A Squadron at Belfast | . |
| . | B Squadron at Londonderry | . |
| . | C Squadron at Lurgan | . |
| 1949 | C Sqn formed troop at Ballynahinch | . |
| 1950 | A Sqn formed two troops at Ballymoney | . |
| 1951 | C Sqn formed two troops at Enniskillen | . |
| 1967.04.01 | Disbanded and concurrently reconstituted as: | . |
| . | D (North Irish Horse) Squadron, The Royal Yeomanry Regiment, formed in TAVR II at Belfast | . |
| . | North Irish Horse (Territorials), formed in TAVR III unit with RHQ at Belfast, including elements of 5th Battalion, The Royal Inniskilling Fusiliers (TA) | . |
| . | A Squadron at Belfast | . |
| . | B Squadron at Londonderry | . |
| 1969.01.01 | TAVR III element reduced to cadre at Belfast as North Irish Horse, sponsored by The Royal Yeomanry Regiment except B Squadron which reformed as 69 (North Irish Horse) Signal Squadron 32 Signal Regiment (V) | . |
| 1969.04.01 | Reorganised as two units: | . |
| . | D (North Irish Horse) Squadron, The Royal Yeomanry Regiment | . |
| . | 69 (North Irish Horse) Squadron, 32nd (Scottish) Signal Regiment, Royal Signals, reconstituted from cadre | . |
| 1975.04.01 | Cadre disbanded (with squadrons remaining intact) | . |
| 1992.04.01 | RAC Squadron independent at Belfast, under operational control of The Royal Irish Rangers | . |
| 1995.04.01 | 69 Signal Sqn transferred to 40th (Ulster) Signal Regiment, Royal Signals | . |
| 1999.07.01 | RAC element regimented as B (North Irish Horse) Squadron, The Queen's Own Yeomanry (remaining under operational control of The Royal Irish Rangers ) | . |
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