Alberto Corrales and his Panorama band ...
• (n.) A company of troops under one vexillum.
Vex`il·la'tion noun [ Latin vexillatio .] (Rom. Antiq.) A company of troops under one vexillum. 
vexillation (vek' suh LAY shuhn) 1. In Roman antiquity, a company of troops under one vexillum, detached for special service from a main body of soldiers. 2. Later, a regular troop of calvary; also, a company of veterans of a legion. While the earliest flags were vexilloids, the emblem at the top of the staff varied. It might have been the t...