Type FW3/24

The Type FW3/24 is a World War II-era pillbox constructed in the United Kingdom as part of the British anti-invasion preparations. Designed by the War Office's Directorate of Fortifications and Works (FW3), this defensive structure was one of many standardized designs built along the British coastline and strategic locations to repel potential German invasion during 1940-1941. The FW3/24 variant typically featured a rectangular plan with loopholes for rifle fire, constructed from reinforced concrete to provide protection for defending troops.