"Metal Militia" is the tenth and final track on Metallica's 1983 album Kill 'Em All. The song starts with a very fast introduction. The songs lyrical theme revolves around a corrupt world where a "Metal Militia" is recruiting members for their band/movement.

Released in 1983, Kill 'Em All was the first album to completely feature everything that made the nascent Bay Area thrash metal scene so unique, although Metallica actually admit to it being influenced a lot by the New Wave Of British Heavy Metal.

The record's release saw many imitators and followers release albums in its wake and set the band that made it on the path to "world domination", as drummer Lars Ulrich would put it in the following year.