16 Coast Regiment RA was formed as Sierra Leone Heavy Regiment, in July 1939. It became 16 Coast Regiment in June 1941. RHQ was re-designated as West Africa Fire Command in December 1945.
| Jul 39 | Formed as Sierra Leone Heavy Regiment RA | Sierra Leone |
| Dec 40 | Re-designated Sierra Leone Coast Regiment RA | Sierra Leone |
| Jun 41 | Re-designated 16 Coast Regiment RA | Sierra Leone |
| Jan 45 | Batteries disbanded | |
| Dec 45 | RHQ re-designated West Africa Fire Command |
Batteries
| Jul 39 | Sierra Leone Heavy Battery RA |
| Jan 41 | Sierra Leone Heavy Battery RA, 2, 3 |
| May 41 | 1, 2, 3 |
| Jun 41 | 37, 38, 39 |
| Oct 43 | 38, 39 |
Equipment
| Jul 39 | 2 x 6 inch Guns |