Key
| Heavy Anti-Aircraft Site |  |
Z Battery |  |
Airfield |  |
| Site No. | Name | OS Grid Reference |
| C5 | Crockleford Heath | TM 047 263 |
| C6 | Fridaywood Farm | TL 986 213 |
Gun Strengths
Overlord & Diver
| Dates | 3.7 inch static | 3.7 inch mobile |
| Mar 44 | 8 | 16 |
| Apr 44 | 8 | 8 |
| Jun 44 | 8 | 0 |
| Jul 44 | 8 | 0 |
| Aug 44 | 8 | 0 |
Heavy AA Regiments known to have occupied sites in this GDA
| Dates | Unit |
| Jan 42?? | 71 (Forth) Heavy Anti-Aircraft Regiment |