Ambulance: French _ambulance_, movable hospital; Latin _ambulare_, to go--_ambi_, around, and root _ba_, go, as in Greek _bainein_. Army: French _armée_; Latin _armata_, past participle of _armare_, to arm, an armed force. Army Corps: German _Armee-Korps_, from French _Corps d’Armée_--_Corps_ from _corpus_, body. Artillery: French _artillerie_; Italian _artilleria_, the art of the _artillarius_, or _articularius_, from _articula_, dim. of _art-em_. Used for _guns_ 16th cent.; for the _Arm_ 18th cent. [See Chap. XVII., par. 1.] Battalion: French; Italian _battaglione_--_battaglia_ (16th cent.). [See Battle.] Battery: French _batterie_--_battre_; Late Latin _battere_, beat; Latin _batu-ere_. Brigade: French (16th cent.); Spanish _brigade_--_brigar_, to brawl; Italian _briga_, a quarrel. Hence a body of contesting troops. Carbineers: Cavalry armed with the _carabine_. Old French _calabrin_--_calabre_, war engine, from Low Latin _chatabula_; Greek _kataball-ein_, throw down. Cavalry: French _cavallerie_ (16th cent.); Italian _cavalleria_; Late Latin _caballarius_--_caballus_, a nag. Column: Latin _columna_, a column, from _columen_--_culmen_, height--cf. _collis_, hill. Command: Old French _commander_, to order; Latin _commendare_, to entrust to one’s charge--later, to order; from _cum_ and _mandare_, to order. Commissariat: from commissary, a person entrusted; Latin _com-mittere_, to commit to. Company: Old French _compainie_; Late Latin _companio_--_cum pane_, with bread, _i.e._ a messmate. Cuirassiers: French _cuirasse_ (15th cent.), from _cuir_; Latin _corium_, leather. Dragoons: from carrying a short musket called a dragon. Italian _dragone_; Latin _draco-n-em_, a dragon. Echelon: French _échelon_--_échelle_, ladder; Latin _scala_, step--_scando_, climb. Engineer (16th cent.): _engynour_ (16th cent.), earlier _engigneor_; Old French _engineur_; Late Latin _ingeniator_ (used in 12th cent.), from _ingeniare_, from _ingenium_, whence Engine. [See Chap. XVII., par. 1.] File: number of men in depth (1598); a row, from French _file_; Latin _fila_, a thread. Fusiliers: men armed with the fusil, a firelock (17th cent.). Latin _focile_, a flint, from _focus_, a hearth-fire. Gentlemen-at-Arms: originally a band of Horse, created 1509; subsequently Court Officers. Grenadiers (late 17th. cent.): men armed with the grenade, invented 1594. Spanish _grenada_, pome-granate, the fruit full of seeds, from Latin _granum_, grain. Guards: soldiers who guard the Sovereign. Guard, French _garde_, is the Teutonic _ward_, from _war_, to defend, connected with _ware_ and _wary_. Hussars: Hungarian _Huszar_, from _Husz_, twenty. Every twentieth man served in the Light Cavalry on the Turkish frontier.