
The Legionairre cannon during Battle of the eleventh planet
The Legionnaire Cannon is a gigantic cylindrical cannon formed by millions of Calaklum-class battleships. It has the firepower necessary to destroy millions of ships or a planet in a single shot. However, firing it destroys the ship that assembled it.
Technical Specifications[]

A Legionnaire cannon being assembled near Planet 11
The Legionnaire Cannon is composed of 2,5 million Calaklum-class battleships. Together the battleships assemble in a cylindrical formation creating an accelerator capable of making an energy source, such as an artificial Sun, go supernova and eliminate everything within a 20,000 Km radius. The energy is then concentrated into a beam by the Calaklums and fired, creating enough firepower to destroy an entire planet.[1]
History[]

A Legionnaire cannon destroys Planet Zemuria
In December of 2202, during the Battle of the eleventh planet, Great Emperor Zworder of Gatlantis allowed Admiral Mazer of the Eighth Mobile Fleet to use a Legionnaire cannon against the Planet Earth. The weapon would have used the 11th planet's artificial Sun as an energy source. However, the terran battleship Yamato managed to stop the cannon's assembly process by firing its Wave-motion Gun at the Sun, resulting in a power surge that deactivated all ships in the fleet.[1]
Another Legionnaire Cannon was assembled inside of the Ark of Destruction in May of 2203,[2] to destroy planet Zemuria in an attempt to stop Yamato from leaving the Planet and revealing the existence of Golem to the Garmillas-Earth Joint Forces.[3]
References[]
Japanese language information[]
レギオネル・カノーネ Regioneru kanōne