| Feb 40 | Formed – 1 Mobile Naval Base Defence Organisation | Fort Cumberland, Hampshire, UK |
| Feb 40 | Anti-Aircraft Training RA | UK |
| Jun 40 | Air Defence Group | Exton, Hampshire, UK |
| Feb 41 | Air Defence Brigade, MNBDO | At sea |
| Mar 41 | Egypt | |
| May 41 | A Battery Crete, B Battery Sidi Barrani | N Africa |
| Jul 41 | Internal security & airfield defence | Egypt |
| Dec 41 | 1 Royal Marine Anti-Aircraft Brigade | UK |
| Dec 41 | Absorbed by 1 Royal Marine Heavy Anti-Aircraft Regiment |
Batteries
| Feb 40 | A & B batteries & 22 Light Anti-Aircraft Battery |
| Jun 40 | A, B, R (Searchlight) |
| Feb 41 | A, B, R & 22 Light Anti-Aircraft Battery |
| Jul 41 | A, C, R & 22 Light Anti-Aircraft Battery |