The War Council, also known as Gallifrey High Command or Time Lord High Command, was a Time Lord council that led the war effort against the Daleks during the Last Great Time War. They met in the War Room in the Capitol on Gallifrey. (TV: The Day of the Doctor)
During the last days of the Time War, the General and Androgar were discussing the War Doctor's part in the Fall of Arcadia when a female member of the Council notified them that there had been a breach in the Time Vaults. The General led a group of Time Lords to the Vaults, where they discovered that the Moment had been stolen by the War Doctor.
Later, "all thirteen" of the Doctor's incarnations called the War Council to notify them of their plan to save Gallifrey by freezing it in a pocket universe. Realising something was wrong, the Dalek fleet above Gallifrey increased their fire power, at which point the General gave the Doctor the go ahead.
The council seemed to operate outside the influence of the High Council, or at least held them in little regard by the end of the Time War. The General scorned reports of the High Council's emergency session, saying their plans had already failed.
By that time, the surviving members of the council, with the exception of the General, were all able to be identified as such on sight due to the unique metallic collars that they wore, which were patterned on the insides with carved Gallifreyan text rather than the traditional solid gold. (TV: The Day of the Doctor)