Cannon __, Expendable Infantry in WWI Trenches
Puzzle 18 of Tolkien Universe Medium Pack
Question is: Cannon __, Expendable Infantry in WWI Trenches
and the answer is: FODDER
Word Meaning:
FODDER — Food for animals; that which is fed to cattle, horses, and sheep, such as hay, cornstalks, vegetables, etc.
Definitions from Wiktionary.