This is an abbreviation for a unit available to all tracked Periphery factions. If searching on the Units Tab, you must include both the faction and their general list in order to see all units available to that faction.
Star League: Magistracy of Canopus, Outworlds Alliance, Pirates, Rim World Republic – Home Guard, Rim World Republic – Terran Corps, Taurian Concordat.
Early Succession War: Circinius Federation, Magistracy of Canopus, Outworlds Alliance, Pirates, Taurian Concordat.
Late Succession War: LosTech and Rennaissance: Circinius Federation, Magistracy of Canopus, Marian Hegemony, Outworlds Alliance, Pirates, Taurian Concordat.
Clan Invasion: Circinus Federation, Magistracy of Canopus, Marian Hegemony, Outworlds Alliance, Pirates, Taurian Concordat
Civil War: Circinus Federation, Magistracy of Canopus, Marian Hegemony, Outworlds Alliance, Pirates, Taurian Concordat
Jihad: Calderon Protectorate, Circinius Federation, Filtvelt Coalition, Fronc Reaches, Magistracy of Canopus, Marian Hegemony, Outworlds Alliance, Pirates, Taurian Concordat.
Early Republic: Calderon Protectorate, Filtvelt Coalition, Fronc Reaches, Magistracy of Canopus, Marian Hegemony, Outworlds Alliance (until 3083), Pirates, Taurian Concordat.
Late Republic: Calderon Protectorate, Filtvelt Coalition, Fronc Reaches, Magistracy of Canopus, Marian Hegemony, Pirates, Taurian Concordat.
Dark Age: Calderon Protectorate, Filtvelt Coalition, Fronc Reaches, Magistracy of Canopus, Marian Hegemony, Pirates, Taurian Concordat.
ilClan: Calderon Protectorate, Filtvelt Coalition, Fronc Reaches, Magistracy of Canopus, Marian Hegemony, Pirates, Taurian Concordat.