Highest Rank in the British Army, Field __
Puzzle 18 of Great Explorations Hard Pack
Question is: Highest Rank in the British Army, Field __
and the answer is: MARSHAL
Word Meaning:
MARSHAL — (historical) A high-ranking officer in the household of a medieval prince or lord, who was originally in charge of the cavalry and later the military forces in general.
Definitions from Wiktionary.