Dalek War Machine

By one account, the Mark II Travel Machines were the initial Dalek designs by Davros following his life-support chair, the Mark I Travel Machine. (PROSE: The History of the Daleks) The design was ultimately finalised with the Mark III Travel Machines, (TV: Genesis of the Daleks) with the Time Lords understanding that Davros had abandoned his first two prototypes. (PROSE: Dalek Combat Training Manual)