Order of Argonauts of St. Nicholas. Was the name of a military order instituted by Charles III., king of Naples, in 1382, for the advancement of navigation, or, as some authors say, merely for preserving amity among the nobles. They wore a collar of shells inclosed in a silver crescent, from which hung a ship with the device, Non credo tempori.

Order of Battle. The arrangement or disposition of the different component parts of an army in one or more lines, according to the nature of the ground, for the purpose of engaging an enemy by giving or receiving an attack, or in order to be reviewed, etc.

Order of Battle, Concave. If the attack is made simultaneously on both wings, and the centre is refused, it is plain that the attacking army will assume a line of battle which will be concave towards the enemy’s line.

Order of Battle, Convex. If the attack is made in the centre of the enemy’s line, refusing both wings, the general direction of the line of battle of the attacking army will be convex towards the enemy’s line, and the term “convex order of battle” is applied to it. Other orders of battle are named by military writers. Their names will generally describe the direction of the hostile lines of battle and the particular formation adopted by the attacking army.

Order of Battle, Oblique. An arrangement of an army for battle with one wing advanced beyond the other, or a movement which brings the line in contact with an enemy’s flank; in general, any combination which brings a preponderating force upon any point of the enemy’s line. See Order.

Order of Calatrava. See [Calatrava, Order of].

Order of Knights of St. Stephen. Instituted in 1561, by Cosmo, duke of Florence. They wear a red cross with a border of gold.

Order of Knights of the Band. Instituted by Alphonso, king of Spain, in 1268. Their name proceeded from the knights wearing a red scarf, or lace of silk, the breadth of 3 inches, which hung on their left shoulder.

Order of Knights of the Bath. A military order in Great Britain, deriving its name from the ceremony of bathing, which was performed at the initiation of the knights. The earliest authentic instance of this ceremony was at the coronation of Henry IV. (1399). The last occasion on which this ceremony was used was the coronation of Charles II., in 1660, after which the order fell into oblivion until it was revived by George I., in 1725. It is now the second in rank among the orders of England, the order of the Garter being the highest. The order of the Bath comprises three classes: first class, Knights Grand Cross (K.G.C.), the number of whom is limited to 50 military men and 25 civilians, besides the royal family; second class, Knights Commanders (K.C.B.), = 102 military and 50 civil; these and the first have the title of Sir; third class, Companions (C.B.), = 525 military and 200 civil.

Order of Knights of the Redemption. Instituted in the kingdom of Aragon by King James, who conquered the island of Majorca, in 1212. Their garments are white, with a black cross thereon.