Junta

The Junta was an army formed from the colonies of Earth.

In the 102nd century, the Junta invaded the New Earth Republic but were beaten back easily. (PROSE: Synthespians™)

Circa the eleventh millennium, (PROSE: The Quantum Archangel) although he later admitted he made some of it up, the Fifth Doctor told Sven Tornqvist that the Union was due to fall in under 100 years, to be replaced by the Junta, which would be replaced after 1000 years by the Confederation, which he said "wasn't a barrel of laughs." (PROSE: The Crystal Bucephalus)