WW1 British BEF Royal Engineers Cap Badge

The WW1 British BEF Royal Engineers Cap Badge is a military insignia issued to members of the Royal Engineers serving with the British Expeditionary Force during the First World War. Typically constructed from brass, the badge features the Garter motto “Honi Soit Qui Mal Y Pense” encircling the Royal Cypher of King George V. Surmounting the design is the royal crown, symbolizing royal authority. This cap badge was worn on the service dress cap and designated the wearer as a member of the Royal Engineers, a corps responsible for military engineering duties such as construction, fortification, and support of battlefield operations. The original period badge measures approximately 4.5 cm by 4 cm and is fitted with lugs or a slider to the reverse for attachment to headgear. It reflects both the identity and specialist role of Royal Engineers within the structure of the British Army during the 1914–1918 conflict.