There are 9 unique codex entries in the Organizations section from Flashpoints. 8 are accessible to all players regardless of class or faction and 1 is faction specific.
Anomid Technologists is obtained from interacting with the Holoprojector Controls during "[FLASHPOINT] The False Emperor" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
Clan Cadera is obtained from speaking with Jekiah Ordo during "[FLASHPOINT] Spirit of Vengeance" mission in solo-story difficulty.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
Clan Varad is obtained near a proximity map trigger during "[FLASHPOINT] Mandalorian Raiders" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
Infinite Army is obtained from killing Commander Rand during "[FLASHPOINT] Legacy of the Rakata" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
Rakata Tribes is obtained from killing War Chief Rehkta during "[FLASHPOINT] Legacy of the Rakata" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Modern Tion Hegemony is obtained near a proximity map trigger during "[FLASHPOINT] Kaon Under Siege" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Order of Zildrog is obtained from interacting with a Clickable Datapad during "[FLASHPOINT] The Nathema Conspiracy" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None
The Republic Navy is obtained from speaking with Captain Yelto during "[FLASHPOINT] Boarding Party" mission.
Codex type: Organizations | Faction: Imperial | Class: All
Associated Achievement: None
Zealots Without a Master is obtained from interacting with a Clickable Datapad during "[FLASHPOINT] The Nathema Conspiracy" mission.
Codex type: Organizations | Faction: Both | Class: All
Associated Achievement: None