35. In respect to the said captains, officers, and soldiers, you shall observe, and cause to be observed, their privilege of exemption from arrest for debt contracted while they were in the service; or the seizure of their weapons, horses, or other things needful and proper to military service, in satisfaction therefor. 36. Whenever you shall send any captain with men on any commission or business that arises, you shall order him also to maintain his privileges, in whatever pertains to the usual exercise of the power and authority requisite to command, direct, and punish his inferiors; as well as all the other things peculiar to the service, and which are conceded to and exercised by officers. 37. It is my will that you have a body-guard of twelve halberdiers, who shall be paid the same sum as the soldiers. The said halberdiers shall have a leader or captain, who shall receive pay of fifteen pesos monthly. Although their principal service shall be to act as a body-guard, and this is determined and ordained by that which pertains to the authority and dignity of your position, you shall take note that they also must go to war upon any occasion that arises. 38. Inasmuch as I have been informed that many of the soldiers, who are sent to the said islands from Nueva España, are mere lads, mestizos, and a few Indians, and unarmed; and that a portion of them are pages and servants of the captains or other persons, who under the title and name of soldier draw their pay but neither they nor their masters are soldiers: you shall allow none of them to be enrolled as soldiers unless they are more than fifteen years old; and accept no page or servant of any person, while he serves as such, as above stated. You shall receive only those mestizos who are worthy, but shall not open a gateway for this in general. I charge and recommend you to pay especial attention to this. 39. Immediately upon your arrival at the said islands, you shall give orders to enclose the city of Manila with stone, along that portion where it is necessary and advisable, and on the other sides by water. You shall construct a fort in the place assigned and deemed best there. You shall erect a tower at the junction and point made by the river and sea. All this shall be very thoroughly done, and with most careful planning and consideration; and shall be done at the least possible expense to my treasury--since, as you know, the buildings can be constructed there with great ease and cheapness. 40. You shall assign what garrison you judge advisable to the said fort and tower, so that the country may be defended, and that they may check the designs and hopes of the enemy, and the fear of revolts and risings.