Semper Invicta

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Semper Invicta is a Brotherhood of Steel main quest and achievement in Fallout 4.

Quick walkthroughEdit

Quest: Semper Invicta
Return to Cambridge police station.
Speak to Paladin Danse.
Support the Brotherhood recon team.
Reward: 300 XP
Leads to: Quartermastery, Cleansing the Commonwealth, The Lost Patrol, Shadow of Steel

Detailed walkthroughEdit

Once the Survivor completes the quest Call to Arms, this one will show up automatically, asking the player character to go back to Cambridge police station and talk with Danse.

After the discussion, Danse asks the Sole Survivor to help both Rhys and Haylen doing their respective job.

The quest will complete once the requisite quests have been completed (either one). The requisite quests are repeatable whether or not this quest has been completed.

Once the job is done, the quest The Lost Patrol will begin.

Quest stagesEdit

10 Talk to Paladin Danse at the Cambridge Police Station.
200 Support the Brotherhood Recon Team.
210 Finished Rhys' assignment.
220 Finished Haylen's assignment.
255Quest finishedIcon checkQuest Complete
355Quest failedIcon crossQuest Failed


  • If the player chooses to join the BOS in the previous quest, upon entering the police station, Paladin Danse will inform Scribe Haylen and Knight Rhys that the Sole Survivor is now a new member. Rhys will make a snarky comment about them staying, commenting that he expected them to take their payment and run, to which the player chooses a response. Afterwards, Danse will immediately chide Rhys for his comment. Next he will address the Sole Survivor and state that they'll "need to understand what it means to be part of the Brotherhood," and how they must follow a strict code and always follow a given order without question. The player may then choose their response. If playing as the male character, one of the dialogue options for the Sole Survivor is for him to mention his time in the military.
  • The Vault-Boy's animation for this quest is the same as that in the "Connection Error" state in the Fallout Pip-Boy companion app.
  • If Paladin Danse is spared during the quest Blind Betrayal, Haylen can be removed from the game upon completion, making it impossible to complete this quest without use of console commands. The quest marker will still be attached to her location, but as she's disabled and under the world, there is no way to interact with her, or even reach her. This can be addressed by entering prid 5de4b, followed by moveto player, and finally enable. She should then be able to give the player Quartermastery as normal.
  • With the Far Harbor DLC installed, either Rhys or Haylen may assign you their mission to a location in Far Harbor.

Behind the scenesEdit

Semper invicta is Latin for "always invincible.". It is also the motto for the city of Warsaw, Poland since World War II, a testament to the strength of the city.

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