The beginning of Tiglath-Pileser's I reign, laid heavy involvement in military campaigns, as suggested from translated texts from the Middle Assyrian period. The texts were believed to be "justification of war." Although little literary text is available from the time of Tiglath-Pieser I, there is evidence to show that the reign of Tiglath-Pileser I inspired the act of recording information, including that of his military campaigns. Toward the end of Tiglath-Pileser's reign literary texts took the form of "summary texts" which served as a vessel for as much information about his reign as possible, with the intent to be handed down to his successor.