Spoilers for Strikeforce #10 below!
As Thor fans know, Marvel Universe Earth is just one world in the ten realms of the World-Tree. It is ringed by Asgard, Jotunheim, and seven others, all populated by a different race of fantasy creature. While the conflicts of the Ten Realms tend to be between each other--elves versus dwarves, dwarves versus giants, giants versus Asgardians--sometimes civil war breaks out, which can lead to the most bloodshed of all. In the pages of the new comic Strikeforce #10, we find that the dark elves are at war with each other, and the combat is between the dark elves of classic Marvel comics and the dark elves from the Marvel Cinematic Universe.
The Dark Elves were first introduced to Marvel Comics in the pages of Thor #344 by writer and artist Walt Simonson. The elves of Svartalfheim had royal blue skin and straight black hair and wore either peasant brown tunics, cool gray armor, or pale blue armor, depending on their rank. Their leader, Malekith the Accursed, was a maniac who wore red and black and believed that the nature of his people, like his own, was one of conquest and bloodshed. Malekith was defeated and imprisoned in Hel, but broke out and quested to retake the crown, killing his own people when they refused to accept his rule.
Malekith also appears in the MCU film Thor: The Dark World, where he is given a more concrete motivation: the Dark Elves existed in the void before the worlds were created and sought to return the universe to that void. Malekith's elves had a much different look: warm off-white armor, matching masks that rendered their eyes empty black circles, and braided white hair. This look would come to the comics later on in Jason Aaron and Mike Del Mundo's Thor, where they represented Malekith's personal army amassed for the War of the Realms event.
Strikeforce #10, written by Tini Howard with art by German Peralta and color by Guru e-FX, takes the protagonists into Svartalfheim to deal with the Vridai, a group of invasive fey creatures who dwell there. They discover that the realm is rife with conflict, and it's not because of the Vridai. After Malekith's failed attempt to conquer Earth in War of the Realms, the dark elves have become locked in civil war. The traditionally-dressed dark elves hate Malekith and seek to establish power by killing him, while Malekith's loyalists wear the MCU uniform and, apparently, bleach their hair.
This war isn't just about 'bad guys versus worse guys', as Strikeforce member Bucky Barnes describes it, or about the politics of elves. It's a representation of the Hegelian nature of comic book adaptations. The original material represents a thesis; the adaptation, an antithesis. Marvel frequently attempts to bring the adapted designs and characters of the movies into the comics, where it has to compete for space with the previous stories, who are older and in their native medium, but less successful. The result, as seen here, is a synthesis: the two versions of Dark Elves now exist in the same space, each taking a role in the story that changes the other but does not negate them. Marvel Comics and the MCU are not always a one-way street of inspiration; oftentimes, as it is here, that street is aflame with war.