In the Grim Darkness of Muv Luv, there is only CHOMP!
For those unfamiliar with the background of humanity's war with the BETA, please take a look at this timeline on the wikia. It is translated from the Japanese wiki, which is in turn taken from the Intergral Works technical manual of the world.
BEWARE: SPOILERS GALORE!
http://muvluv.wikia.com/wiki/Alternative_Timeline