The Judoon were organised into platoons, led by captains.
The Tenth Doctor observed a "Judoon platoon upon the Moon" marching towards the Royal Hope Hospital. (TV: Smith and Jones)
During the Gloucester Incident, the Thirteenth Doctor observed Captain Pol-Kon-Don leading a platoon of Judoon "near the Moon" and later near a Gloucester "lagoon". (TV: Fugitive of the Judoon)