Mil. [ASSEMBLE v.1 (sense 5) in the imperative mood, used as the name of a command or signal.] The second beat of the drum, or other signal, ordering soldiers to strike their tents and stand to their arms. Cf. ASSEMBLY 9.
1883. Army Corps Orders, in Standard, 22 March, 3/3. No bugle sounds are to be used … except the ‘cease fire’ and the ‘assemble.’
