Prisoner of war the custody of a person, then the responsibility was on the individual. The freeing of prisoners was highly recommended as a charitable act. The 1648 Peace of Westphalia, which ended the Thirty Years' War, established the rule that prisoners of war should be released without ransom at the end of hostilities and that they should be allowed to return to their homelands. There also evolved the right of "parole", French for "discourse", in which a captured officer surrendered his sword and gave his word as a gentleman in exchange for privileges. If he swore not to escape, he could gain
Siege of Breda (1624) thereafter. The siege of 1624 captured the attention of European princes and, along with other battles like White Mountain (1620), played a part in the Spanish army regaining the formidable reputation it had held throughout the previous century. In the latter stages of the combined Eighty and Thirty Years' wars that had greatly strained Spanish resources, Breda was lost to the Dutch under Frederick Henry after a four-month siege. In the 1648 Treaty of Westphalia that ended the Thirty and Eighty Years' wars, it was ceded to the Dutch Republic. There were several motives for Spinola's siege of Breda. Because