sentences:  The "cornicines" are used only to regulate the motions of the colours; the "tubicines" serve when the soldiers are ordered out to any work without the colours; but in time of action, the "tubicines" and "cornicines" sound together.The "classicum", which is a particular signal of the "buccinatores" or "cornicines", is appropriated to the commander-in-chief and is used in the presence of the general, or at the execution of a soldier, as a mark of its being done by his authority.The ordinary guards and outposts are always mounted and relieved by the sound of the "tubicen", who also directs the motions of the soldiers on working parties and on field days.