The Royal Navy’s field gun competition is a contest between teams from various Royal Navy commands, in which teams of sailors compete to transport a field gun and its equipment over and through a series of obstacles in the shortest time.

The origins of the field gun competition lie in the Second Boer War in South Africa. The legendary story tells of the siege of the British garrison in Ladysmith in 1899. In support of the British Army, the Royal Navy landed guns from HMS Terrible and Powerful to help in the relief of the siege. The Naval Brigade transported guns over difficult terrain and brought them into action against the Boers.

Photo via Swaffs Photography.
Illustration via Wellington College.
Quoted text via Wikipedia.