Template:FtFlaglerBatteryBankhead
| No. | Caliber | Length | Model | Serial No. | Manufacturer | Carriage | Service Dates | Notes | |
|---|---|---|---|---|---|---|---|---|---|
| A-1 | 12" Mortar Rifle | 129.25" | 1890MI | 114 | Watervliet | Mortar, M1896MI, #269, Rarig Engr. Co. | 1902-1942 | ||
| A-2 | 12" Mortar Rifle | 129.25" | 1890MI | 77 | Watervliet | Mortar, M1896MI, #270, Rarig Engr. Co. | 1902-1921 | ||
| A-3 | 12" Mortar Rifle | 129.25" | 1890MI | 90 | Watervliet | Mortar, M1896MI, #272, Rarig Engr. Co. | 1902-1942 | ||
| A-4 | 12" Mortar Rifle | 129.25" | 1890MI | 133 | Watervliet | Mortar, M1896MI, #271, Rarig Engr. Co. | 1902-1921 | ||
| B-1 | 12" Mortar Rifle | 129.25" | 1890MI | 134 | Watervliet | Mortar, M1896MI, #273, Rarig Engr. Co. | 1902-1942 | ||
| B-2 | 12" Mortar Rifle | 129.25" | 1890MI | 67 | Watervliet | Mortar, M1896MI, #274, Rarig Engr. Co. | 1902-1921 | ||
| B-3 | 12" Mortar Rifle | 129.25" | 1890MI | 137 | Watervliet | Mortar, M1896MI, #276, Rarig Engr. Co. | 1902-1942 | ||
| B-4 | 12" Mortar Rifle | 129.25" | 1890MI | 128 | Watervliet | Mortar, M1896MI, #275, Rarig Engr. Co. | 1902-1921 | ||
| Source: Coastal Defense Study Group | |||||||||