Via io9.com:
You can’t swing a dead womprat on a Star Destroyer without hitting a terminated Imperial officer, Force-choked to death by Darth Vader for some failure or another. But who deserved their termination the most? These dozen would-be heroes of the Empire, that’s who.
1) Admiral Kendal Ozzel
Let’s start with the obvious: Admiral Ozzel, the fleet commander who messed up the Empire’s approach to Hoth, giving the Rebels warning and time to (mostly) escape. As Vader points out in Empire Strikes Back, Ozzel took the fleet out of lightspeed too close to Hoth, alerting the Rebels to their presence, and giving them time to put up their shields. Basically, Admiral Ozzel screwed up the job of parking his Star Destroyer. For that, along with a whole list of screw-ups chronicled in the old expanded universe, Vader offed him.
2) Mulchive Wermis
The colorfully named Wermis was captain of the first Star Destroyer seen in A New Hope, the one that captured Princess Leia’s ship. Under Wermis’ command, C-3PO and R2-D2 managed to escape in a pod with the Death Star plans which eventually led to the destruction of the Death Star, so that wasn’t particularly good for him. In the Dark Horse comics, Wermis was basically Vader’s chauffeur as he chased Luke, Leia and Han Solo around the galaxy, and Wermis managed to screw up capturing them on multiple occasions. As such, Vader would Force-choke him constantly. Still, he managed to survive to get demoted to a desk job, where he eventually had a heart attack.
3) General Nevar
This boob only managed to attain the rank of general because of nepotism. While chasing a potential Force-sensitive being to Hoth, his subordinates found traces of Rebel activity. Nevar thought this was so ridiculous that he deleted their reports. Seriously, here’s the quote: “Rebels on Hoth? All I have is your word for it? What could they be doing on such a worthless planet? I’m deleting your reports.” Of course, what his underlings had actually found was the earliest beginnings of the Hoth base as seen in The Empire Strikes Back. Apparently, Nevar was in the battle of Hoth, on the AT-AT that tripped on tow cables and was then shot in the neck by Wedge Antilles and blew up. Somehow Nevar survived that only to be assassinated by an unknown Imperial, mainly for being a boob.
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