The Doctor’s home planet, Gallifrey, having allowed itself to be drawn into the Last Great Time War, was suddenly faced with a great crisis necessitating the raising of troops to do battle.
The Gallifreyan Guards were brave and loyal militia, drafted in to defend Gallifrey from the overwhelming threat of the invading Daleks. They were the last line of defence, responsible for defending the Citadel from threats at all costs. They answered to the General, himself under command from Lord President Rassilon.
In the final days of the Time War, these brave soldiers were there on the front line to witness total devastation. Arcadia, once thought to be the safest place on the planet, protected by four hundred sky trenches, was penetrated by the huge Daleksaucer invasion fleet and destroyed, the Gallifreyan Guards hopelessly outnumbered.