In 21BBY, during the clone wars, a battle was fought in the Rial Kroon system between Jedi General Toluz Cheq's Republic fleet and the separatist fleet, aided by new models of CIS Vulture droids equipped with advanced engines constructed by famous starship builders from the planet Valahari. Following the battle, the Jedi attempted to convince the Valahari to stop supplying the Confederacy with the engines but failed to do so.