How many letters does the top answer for “the heavy fire of artillery to saturate an area rather than hit a specific target” have?

The most common answer is shelling (8 letters).

Crossword clue: the heavy fire of artillery to saturate an area rather than hit a specific target

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

shelling 8 letters wn-def

the heavy fire of artillery to saturate an area rather than hit a specific target