Knights Hospitaller
The Order of Knights of the Hospital of Saint John of Jerusalem (; ), also known as the Order of Saint John, Order of Hospitallers, Knights Hospitaller, Knights Hospitalier or Hospitallers, was a medieval and early modern Catholic military order. It was headquartered in the Kingdom of Jerusalem, on the island of Rhodes, in Malta and St Petersburg.
Knights Templar
Although the primary mission of the order was militaristic, relatively few members were combatants. The others acted in support positions to assist the knights and to manage the financial infrastructure. The Templar Order, though its members were sworn to individual poverty, was given control of wealth beyond direct donations. A nobleman who was interested in participating in the Crusades might place all his assets under Templar management while he was away. Accumulating wealth in this manner throughout Christendom and the Outremer, the order in 1150 began generating letters of credit for pilgrims journeying to the Holy Land: pilgrims deposited their valuables with a local Templar preceptory before embarking, received a document indicating the value of their deposit, then used that document upon arrival in the Holy Land to retrieve their funds in an amount of treasure of equal value. This innovative arrangement was an early form of banking and may have been the first formal system to support the use of cheques; it improved the safety of pilgrims by making them less attractive targets for thieves, and also contributed to the Templar coffers.