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"The War Without, the War Within" was the 14th episode of Star Trek: Discovery in the show's first season, first aired 4 February 2018.


Back on the USS Discovery, Michael Burnham and the crew are faced with the harsh reality of the war during their absence. In order to move forward, Starfleet must use unconventional tactics and sources to take their next action against the Klingons.



AiriamR.A. BryceMichael BurnhamKatrina CornwellKeyla DetmerDrakePhilippa Georgiou (mirror)GorchL'RellJoann OwosekunTracy PollardGen RhysSarekSaruShukarPaul StametsSylvia TillyAsh Tyler (Klingon)USS Discovery computer
Referenced only
Gabriel LorcaGabriel Lorca (mirror)Jonathan ArcherVoq

Starships and vehicles[]

USS Discovery (Crossfield-class science vessel)
Referenced only
Enterprise (NX-class)


Qo'noSStarbase 1
Referenced only
Delta 2IridinKelfour VINivallaSeptraStarbase 12Starbase 19Starbase 22Veda system

Races and cultures[]


States and organizations[]

Klingon EmpireStarfleetUnited Federation of Planets

Science and technology[]

spore driveterraforming

Ranks and titles[]


Science and classification[]

class 4 moon

Other references[]

atmospherebootclothinggovernmentjacketnationpantsraces and culturesrankscienceStarfleet uniformStarfleet uniform (2240s-2265)titleuniform


Discovery travels towards the heart of the Federation investigating the extent of war losses.




Star Trek: Discovery episodes Series title image.
season 1 chapter 1 "The Vulcan Hello" • "Battle at the Binary Stars" • "Context Is for Kings" • "The Butcher's Knife Cares Not for the Lamb's Cry" • "Choose Your Pain" • "Lethe" • "Magic to Make the Sanest Man Go Mad" • "Si Vis Pacem, Para Bellum" • "Into the Forest I Go"
chapter 2 "Despite Yourself" • "The Wolf Inside" • "Vaulting Ambition" • "What's Past Is Prologue" • "The War Without, The War Within" • "Will You Take My Hand?"
season 2 "Brother" • "New Eden" • "Point of Light" • "An Obol for Charon" • "Saints of Imperfection" • "The Sound of Thunder" • "Light and Shadows" • "If Memory Serves" • "Project Daedalus" • "The Red Angel" • "Perpetual Infinity" • "Through the Valley of Shadows" • "Such Sweet Sorrow"
season 3 "That Hope Is You, Part 1" • "Far From Home" • "People of Earth" • "Forget Me Not" • "Die Trying" • "Scavengers" • "Unification III" • "The Sanctuary" • "Terra Firma" • "Su'Kal" • "There Is A Tide..." • "That Hope Is You, Part 2"
season 4 "Kobayashi Maru" • "Anomaly" • "Choose to Live" • "All Is Possible" • "The Examples" • "Stormy Weather" • "...But to Connect" • "All In" • "Rubicon" • "The Galactic Barrier" • "Rosetta" • "Species Ten-C" • "Coming Home"
season 5 "Red Directive" • "Under the Twin Moons" • "Jinaal" • "Face the Strange" • "Mirrors" • "Whistlespeak" • "Erigah" • "Labyrinths" • "Lagrange Point" • "Life, Itself"


published order
Previous episode:
What's Past Is Prologue
Discovery episode produced Next episode:
Will You Take My Hand?
Previous episode:
What's Past Is Prologue
Discovery episode aired Next episode:
Will You Take My Hand?
chronological order
Previous Adventure:
What's Past Is Prologue
Voyages of the
USS Discovery
Next Adventure:
Will You Take My Hand?

External link[]