User blog comment:Zathronas/Analysis by an author: Volume 2 episode 12: Breach/@comment-78.42.186.25-20141031023132/@comment-173.58.251.107-20141031061518

They're robots, you can build more, just like Battle Droids from Star Wars, point at bad guys, walk right in, take casualties, but as long as you have the materials to keep building droids, it doesn't matter how many die, there will always be more.