Twelfth General

The General was the Time Lord military commander who led the War Council, therefore the efforts to defend Gallifrey from the Dalek onslaught in the final days of the Last Great Time War. He had a testy relationship with the Doctor, thinking him a "mad fool". He was in his eleventh incarnation.

In the aftermath of the Fall of Arcadia, he was informed of the War Doctor's appearance there. He was then alerted to a security breach in the Time Vaults, discovering that the Doctor had taken the Moment, the last weapon in the Omega Arsenal and that only he would dare use it.

He was later contacted by three incarnations of the Doctor, much to his displeasure, the War Doctor with the Tenth and Eleventh Doctor, who revealed to him their plan to save Gallifrey by freezing it before its destruction and shifting it to a pocket universe. The General was sceptical, shocked by the thought of being lost and forgotten in another universe and that the calculations would take centuries. The Doctors informed that they have recruited all their incarnations to help. With the Dalek fleet closing in, he soon gave the order and "all thirteen" Doctors performed the process together. (TV: The Day of the Doctor)

When the Twelfth Doctor returned to Gallifrey, they had a much friendlier interaction, even siding with the Doctor when exiling Rassilon. However when the Doctor extracted Clara Oswald form her timeline, the General protested at his actions. The Doctor used the General's gun and shot him, forcing him to regenerate into his twelfth incarnation, this time a female (TV: Hell Bent)

Behind the scenes
The General was played by Ken Bones, who also provided the Time Lord "Voice" asking the Question, "Doctor who?", in The Time of the Doctor. Although not explicitly confirmed, it can be inferred that the voice asking the Question was that of the General. Indeed, the subtitles on the Blu-Ray and DVD identify the voice as that of the General.

Le Général