High Quality Content by WIKIPEDIA articles! 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 competition evolved during the first 6 years of the 20th century. The format, using walls and a chasm to negotiate, was held annually at the Royal Tournament in London from 1907 until 1999, apart from the periods during the World Wars. The "Inter-Port", or Command Competition was contested by teams from the Royal Navy annually, and was probably the most popular item at the Royal Tournament.