Cap Badge - Labour Corps, Pioneer Corps or Royal Pioneer Corps In November 1939 the War Office approved a badge for the [Pioneer] Corps. Described as:- A rifle, a shovel and a pick ‘piled’ on them a laurel wreath, all ensigned with a [King's] crown Beneath, the motto Labor Omnia Vincit (Work Conquers all). The badge was not designed for the Pioneer Corps but was approved in October 1918 for the Labour Corps which was formed in 1917 and disbanded in 1919. If it has lugs on the back it may be Labour Corps and if it has a slider rear, it most likely is Pioneer Corps.The General List badge was used before the Corps got their own badge. The Royal Pioneer Corps was a British Army combatant corps used for light engineering tasks. It was formed in 1939 and amalgamated into the Royal Logistic Corps in 1993. Pioneer units performed a wide variety of tasks in all theatres of war, handling all types of stores, laying prefabricated track on the beaches and stretcher-bearing. They also worked under Engineer supervision on the construction of the Mulberry Harbour and laid the Pipe Line Under the Ocean (PLUTO), constructed airfields, roads and erected bridges.