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Story Arc: Yesterday's War

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Preceeded by
Iconian War
Followed by
Future Proof
Episode Arc - Iconian War.png Episode Arc - Future Proof.png

Faction Na'kuhl.png Join the fight against rogue time travelers in a struggle to protect and preserve the galactic timeline.

The Yesterday's War story arc is a chain of cross-faction missions available to all factions.

The Iconian War has ended, but a rise in usage of temporal technology during the war will have everlasting repercussions. You have been summoned by the designated Temporal Officer to join Agent Daniels in maintaining what has been recorded as proper timeline.

But many are rising up to fight the "true timeline" the Alliance is enforcing. An unknown individual, only known as Envoy, is uniting them under the banner of Temporal Liberation Front. Captains will have to fight across multiple centuries and universes to prevent the temporal anomalies and incursions caused by the TLF.

List of missions[edit | edit source]

EP - Temporal Ambassador.png “Temporal Ambassador”

A strange anomaly has been detected in the Azure Nebula. With all of the Tholian activity in that area, can danger be too far behind?
Contact: Geordi La Forge / Tum'Era
Release Date: January 31, 2013
EP - The Once and Future Agent.png “The Once and Future Agent” Faction NOTOS.png (Non-DSC & TOS Starfleet)

Meet with Temporal Agent Daniels to discuss how you can help secure the galactic timeline.

Mission cannot be replayed.

Contact: Philip Crey / Q'on / Kail
Release Date: July 6, 2016
EP - Core of the Matter.png “The Core of the Matter”

Daniels has discovered unusual temporal activity in 23rd Century Romulan space and requires your assistance.
Contact: Daniels
Release Date: July 6, 2016
EP - Vorgon Conclusions.png “Vorgon Conclusions”

Time-travelling Vorgon agents may be threatening Kal Dano in the future. Travel to the Lirss System to investigate.
Contact: Daniels
Release Date: July 6, 2016
EP - Terminal Expanse.png “Terminal Expanse”

The Sphere Builders are conducting operations in a quantum universe similar to our own. They must be stopped!
Contact: Daniels
Release Date: July 6, 2016
EP-Survivor.png “Survivor”

Starfleet admiral T'nae was duplicated during a temporal incident. Until this has been resolved, the galactic timeline is in jeopardy. Work with Agent Daniels to make things right!
Contact: Daniels
Release Date: April 6, 2017

Notes[edit | edit source]

  • Both Temporal Ambassador and Survivor were originally part of other arcs (Klingon War and New Frontiers respectively) but were relocated to Yesterday's War as part of Season 15.

See also[edit | edit source]

Faction FED23.png TOS Starfleet Storyline Episodes
Faction Starfleet.png Starfleet (25c) Storyline Episodes
Faction KDF.png Klingon Defense Force Storyline Episodes
Faction Romulan Republic.png Romulan Republic Storyline Episodes
Faction Dominion.png Dominion Storyline Episodes
Faction DSC.png DSC Starfleet Storyline Episodes
Faction FedRomKDF.png Cross-Faction Storyline Episodes
Mission available Side Content: The Galaxy at Large