Gallifreyan shock troops were specialised Gallifreyan troops used by the Time Lords against the Daleks during the Last Great Time War. (AUDIO: The Rulers of the Universe) Among the equipment they possessed was a time pendant (AUDIO: Assets of War) which allowed troopers to stay precisely ten nanoseconds in time ahead of their opponents, which they used to avoid getting "mowed down" on ground assaults. Such a pendant was taken by the Eighth Doctor as a "souvenir", which he used to escape the Sanukuma. (AUDIO: The Rulers of the Universe)
The 5th Gallifreyan Infantry was a Gallifreyan shock troop. (AUDIO: Assets of War)