Unconquered. Not subdued or defeated; in opposition to conquered or defeated.

Uncover, To. When troops deploy, the different leading companies or divisions, etc., successively uncover those in their rear, by marching out from the right or left of the column.

Undaunted. Not appalled by fear; valiant.

Under. A preposition of varied military application, in combination with other words. Thus troops are said to be under arms, when assembled in a state of military array, and having the necessary weapons of offense and defense, as rifles, swords, etc. To be under command is being liable to be ordered on any particular duty. To be under cover is to be shielded or protected. To be under contribution is being liable to give, in money or kind, what may be authoritatively called for. Countries are sometimes put under contribution for the support of an army. To be under fire or be cool is not being disconcerted by the apprehension of death in battle. To be under sentence is the liability to punishment, according to sentence passed; as, under the sentence of a general court-martial; under sentence of death.

Under Canvas. In a military sense, it is to be lying in tents.

Undermine. To dig an excavation under any fort, house, or other building, so as to cause it to fall down or to blow it up with powder.

Under-officer. An inferior officer, one in a subordinate situation.

Undisciplined. Not yet trained to regularity or order; not perfect in exercise or manœuvres.

Undress. In the military service, is the authorized habitual dress of officers and soldiers when not in full uniform.

Unfix, To. To take off; as, to unfix bayonets, on which the soldier disengages the bayonet from his musket, and returns it to the scabbard.