The Ekosian major was a mid-ranking security officer who was a member of the SS on the planet Ekos in 2268. The major was assigned duties at Fuhrer headquarters and was responsible for arresting James T. Kirk and Spock when they attempted to gain entry to Nazi HQ in an effort to find John Gill. The major exposed the two by ordering Spock to remove the helmet of his captured SS uniform, thereby revealing Spock's Vulcan ears.
The major later interrogated Spock and Kirk in the Chancellery Detention Center, having them beaten and then prepared to have them executed. He was prevented from carrying out the execution by Eneg, who ordered Spock and Kirk held for one hour awaiting further questioning. During that hour, Kirk and Spock escaped. (TOS: "Patterns of Force")
The officer, played by Gilbert Green, was billed in the credits as the "SS Major," (as Spock and Melakon both referred to him) but this rank is inconsistent (based on the system used on Earth) with his uniform insignia, a single oak leaf which would have signified a World War II-era German colonel (referred to as Oberst for an army officer or Standartenführer for an SS officer). It is also unknown how Kirk would have had such knowledge on Ekos SS ranks, since Kirk addresses the officer as major before the rank is stated by anyone else. This officer seems to be wearing his insignia incorrectly; an SS Standartenführer or colonel would have both collar patches a single oak leaf, but he is wearing his right one with standard SS bolts for ranks below a colonel, and the left one a colonel's oak leaf.
An Ekosian SS lieutenant in the Ekosian SS congratulated a disguised Spock on capturing Captain Kirk, but was neck-pinched by Spock. Kirk then stole his uniform. (TOS: "Patterns of Force")
This second officer shown in the episode, played by Peter Canon, also wore a second lieutenant rank on his collar, but after Kirk stole the uniform, once again the rank became first lieutenant on Kirk's collar. A production goof occurs at the time of the Lieutenant's appearance, in that he is clearly seen waiting for William Shatner and Leonard Nimoy to round the corner of a building and then jumps into a walk down the building stairs when he sees the actors approach.
A junior sergeant (Unterfeldwebel, an SS Scharführer – "squad leader") stood to the left of the Party Headquarters door, apprehended Kirk on the major's orders, and stood guard during their interrogation. (TOS: "Patterns of Force")
Played by Ed McCready wearing rank patches of a private.
An Ekosian torturer wearing private rank patches but officer shoulder braids flogged prisoners on the major's orders. Later, he was nerved pinched by Spock, and Kirk stole his uniform. (TOS: "Patterns of Force")
An Ekosian corporal (Gefreiter or SS Sturmmann – "storm trooper") bumped into a disguised Kirk in the hall. Kirk pick-pocketed the corporal's keys. When the man returned, Isak knocked him unconscious and Spock took the uniform. (TOS: "Patterns of Force")
This Ekosian SS guard was stationed at the presentation of the "final solution". He interrupted along with another SS guard and Eneg, when Leonard McCoy beamed down to Ekos posing as an SS doctor. (TOS: "Patterns of Force")
This Ekosian SS guard was stationed at the presentation of the "final solution". He interrupted along with another SS guard and Eneg when Leonard McCoy beamed down to Ekos posing as an SS doctor. (TOS: "Patterns of Force")
A member of the Zeon resistance was part of a ruse to test Captain Kirk and Spock's loyalty. This mustached man wore faux Ekosian private accoutrements, and held his fellow rebels at gunpoint. He later drove the car which delivered Kirk, Spock, Isak, and Daras to the Nazi Party headquarters (by this time, he had shaven off his mustache). (TOS: "Patterns of Force")
The unnamed soldier, portrayed by regular extra player Eddie Paskey, wore the insignia of a private on his uniform, a black rectangle on the collar, and plain bordered shoulder boards. Since the resistance consisted of Ekosians working together with the Zeon rebels, there is no reliable way to discern which of the two species this man was.
A member of the Zeons' resistance was part of a ruse to test Kirk and Spock's loyalty. This man wore a faux Ekosian recruit (SS Anwärter) accoutrements, and held his fellow rebels at gunpoint. (TOS: "Patterns of Force")
This Ekosian lance corporal guarded John Gill when he was broadcasting that a fleet of space vehicles is preparing to depart from Ekos to carry the war of extermination to Zeon. (TOS: "Patterns of Force")