Supreme Commander

Supreme Commander was a command title held by many species.

Daleks
Davros was the Supreme Commander of the Kaled Scientific Elite. (TV: Genesis of the Daleks) The Dalek Supreme who led the invasion of the Cathedral of Contemplation during the Second Dalek War was addressed as Supreme Commander. (AUDIO: Out of Time) Davros aspired to become the Supreme Commander of the Daleks when he learned his creations followed the Supreme Dalek during the Dalek-Movellan War. (TV: Destiny of the Daleks)

Others
Zusa was a Craxon Supreme Commander. (COMIC: The False Planet)

The Warburg was led by its Supreme Commander General Sontar. (PROSE: The Infinity Doctors)

Stabb was the Supreme Commander of 9th Sontaran fleet. (AUDIO: Heroes of Sontar)

Kalendorf became the Supreme Commander of the Earth Alliance fleet. (AUDIO: Dalek War: Chapter One)