In case you didn't already know, Batman v Superman: Dawn of Justice is going to be a massive, massive film. The folks behind Warner Bros. and DC Comics need to find a way to make their superhero movies compare to The Avengers and the universe established by Marvel Studios, and their big way to do that is to bring Batman, Superman, Wonder Woman, Cyborg, and who knows however many other heroes together on the big screen for the first time. With a big cast of heroes and a big budget also comes big, epic action sequences as well, and apparently director Zack Snyder has a doozy planned out. Reports have surfaced saying that Batman v Superman will be bringing together 8,500 extras together for a sequence shooting in the Detroit area later this month.This news comes to us via ManOfSteelFanPage.com , which traces this story all the way back to April when the casting company Crown City Pictures held auditions looking for Detroit-based extras. The search was specifically looking for both men and women who could fit into the mold of "military and business executive types." Weirdly enough, the production is only calling up those who have actual military background at this time, but they are needed by the thousand. The original story says that those involved have been called to report on June 11th - next Wednesday - for a shoot that will be filming all day and into the evening (which is a pretty long day during the summer months)Much like everything else about Batman v Superman: Dawn of Justice, we don't really know any details about what is going to be going on in the scene, but I wouldn't be too surprised if that info leaks out next week. Bringing together as many as 8,500 extras means that the production is likely going to be taking place outside, and that means we could end up seeing a whole bunch of amateur photos flood the internet.Batman v Superman: Dawn of Justice is already in production with a cast that includes Henry Cavill, Ben Affleck , Gal Gadot, Amy Adams, Lawrence Fishburne, Diane Lane, Jeremy Irons, and Jesse Eisenberg. While David Goyer and Zack Snyder developed the original story with Goyer penning early drafts of the screenplay, eventually the pen was handed over to Chris Terrio, who won an Academy Award for his Argo screenplay. While cameras are rolling now and will be for the next few months, sadly the finished result remains far, far away. Warner Bros. currently has the film set to be released on May 6, 2016, though that's liable to change given that it is the same release date that Marvel Studios previously planted their flag for the untitled Captain America 3