Key facts
- Official designation: fw3/25
- Internal measurement of 6ft (1.8m)
- Shape: circular
- Common name: Armco
- Proof against rifle fire
- For infantry using rifles and light automatics
- Usually found with three rifle loops and a low entrance
- Walls usually 12″ (30cms) thick and often shuttered in corrugated iron giving it a distinctive appearance
Information obtained from pillbox typology part 4 in Loopholes journal of the PSG. With kind permission of Mike Osborne.