noun, masculine/bʁɑ̃l.ba d(ə) kɔ̃.ba/
the hurried taking down of hammocks in a ship as preparation for imminent battle; action stations; flurry, uproar, bustle, commotion
Synonyms: remue-ménage, chambard, bordel
Literally, “battle branle-bas”, as distinct from a regular branle-bas.