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.
Age of War 2005 - 2570
Star League 2571 - 2780
Early Succession War 2781 - 2900
Late Succession War - LosTech 2901 - 3019
Late Succession War - Renaissance 3020 - 3049
Clan Invasion 3050 - 3061
Civil War 3062 - 3067
Jihad 3068 - 3080
Early Republic 3081 - 3100
Late Republic 3101 - 3130
Dark Age 3131 - 3150
ilClan 3151 - 9999