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% replaces any number of letters (la% - lake, lamp)_ replaces one letter (ca_ - car, cat)

Crossword clues for Grunts' grub 8 letters:

KRATIONS: Grunts' grub
MESSHALL: Where grunts get grub
MRES: Grunts' grub
MESSMATES: Grub-eating grunts
MESS: Grunt's grub
MRE: Grub for grunts, briefly