How many letters does the top answer for “a member of a military unit trained as shock troops for hit-and-run raids” have?

The most common answer is commando (8 letters).

Crossword clue: a member of a military unit trained as shock troops for hit-and-run raids

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

commando 8 letters wn-def

a member of a military unit trained as shock troops for hit-and-run raids

ranger 6 letters wn-def

a member of a military unit trained as shock troops for hit-and-run raids