15 Regiment
| Dates | Locations & Titles | Minor Units - Remarks |
| . | . | . |
| . | GHQ Signals, Middle East | . |
| ??? | Eygpt: Cairo | . |
| . | 1946: Renamed 3rd GHQ Signal Regiment | . |
| 1947 | Egypt: Moascar, Canal Zone | . |
| 1955 | Cyprus: Episkopi | . |
| . | 1959: Renamed 15th Signal Regiment (Middle East) | . |
| . | 3 Sep 60: Amalgamated with 29th Signal Regiment | . |
| . | 1 Mar 61: Renamed 15th Signal Regiment (Cyprus) | . |
| . | 31 Mar 63: Disbanded | . |
| . | . | . |
| . | 15th Signal Regiment | . |
| 1965.01.22 | Reformed in Aden | . |
| . | Oct 67: Disbanded | . |
| . | . | . |
| . | 15th Signal Regiment | . |
| 1990.02.01 | Northern Ireland: Reformed at Lisburn | . |
| ?? | England: Blandford Forum, Dorset | . |
| . | 30 Sep 2011: Re-titled 15 Signal Regiment (Information Support) | . |
| . | . | . |
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