"LXI. We have known many out of divers provinces, as well retainers as esquires, fervently desiring for the salvation of their souls to be admitted for life into our house. It is expedient, therefore, that you admit them to the vows, lest perchance the old enemy should suggest something to them whilst in God's service by stealth or unbecomingly, and should suddenly drive them from the right path." Hence arose the great class of serving brethren, (_fratres servientes_,) who attended the knights into the field both on foot and on horseback, and added vastly to the power and military reputation of the order. The serving brethren were armed with bows, bills, and swords; it was their duty to be always near the person of the knight, to supply him with fresh weapons or a fresh horse in case of need, and to render him every succour in the affray. The esquires of the knights were generally serving brethren of the order, but the services of secular persons might be accepted. The order of the Temple always had in its pay a large number of retainers, and of mercenary troops, both cavalry and infantry, which were officered by the knights. These were clothed in black or brown garments, that they might, in obedience to the rule,[82] be plainly distinguished from the professed soldiers of Christ, who were habited in white. The black or brown garment was directed to be worn by all connected with the Templars who had not been admitted to the vows, that the holy soldiers might not suffer, in character or reputation, from the irregularities of secular men their dependents.[83] The white mantle of the Templars was a regular monastic habit, having the red cross on the left breast; it was worn over armour of chain mail, and could be looped up so as to leave the sword-arm at full liberty. On his head the Templar wore a white linen coif, and over that a small round cap made of red cloth. When in the field, an iron scull-cap was probably added. We must now take a glance at the military organization of the order of the Temple, and of the chief officers of the society. Next in power and authority to the Master stood the Marshal, who was charged with the execution of the military arrangements on the field of battle. He was second in command, and in case of the death of the Master, the government of the order devolved upon him until the new superior was elected. It was his duty to provide arms, tents, horses, and mules, and all the necessary appendages of war. The Prior or Preceptor of the kingdom of Jerusalem, also styled "Grand Preceptor of the Temple," had the immediate superintendence over the chief house of the order in the holy city. He was the treasurer general of the society, and had charge of all the receipts and expenditure. During the absence of the Master from Jerusalem, the entire government of the Temple devolved upon him.