Special Dalek forces

In the Dalek Combat Training Manual published during the Last Great Time War, the Time Lords identified special Dalek forces which fought in the Daleks' conflict against the Space Security Service. The Gallifreyans had done "meticulous research" into the conflict, mentioning that they had discovered how "a red Dalek leader" had served as a high-ranking officer of the Dalek forces during the campaign. Nevertheless, the text did not clarify if the officer in question was the Red Dalek Leader, or merely another Dalek that had attained the rank. This leader oversaw silver Daleks and was supported by a red-domed subordinate. (PROSE: Dalek Combat Training Manual)

Characteristics
The special Dalek forces mostly resembled what the Time Lords identified as "Type III" casings. This variant of the Type III casing sported large blue luminosity dischargers and slats but with a larger base unit fender matching the "Type II" Dalek Earthforce. Whilst the subordinates' fenders were black, the Red Dalek's fender was red to match its casing. The Red Dalek was further distinguished by its sense globes which were coloured black in contrast to the blue of its subordinates; as noted elsewhere in the Dalek Combat Training Manual, black sense globes were "multiphase" improvements to earlier blue globes and would be seen on later grey Daleks and silver Daleks. (PROSE: Dalek Combat Training Manual) The silver Daleks were identical to those of the Dalek Invasion Force in the 2150 Dalek invasion of Earth which was opposed by Dr. Who in a version of history "B", whilst the red Dalek leader itself bore a great resemblance to the Red Saucer-Pilot of the Invasion Force. (PROSE: Dalek Survival Guide, TV: Daleks' Invasion Earth 2150 A.D.)