 The Annals are believed to have been composed in successive sections by different authors, and then compiled.The depth of knowledge regarding court affairs suggests that the annals were written by persons close to the king, and their initial reluctance to comment on Frankish defeats betrays an official design for use as Carolingian propaganda.Though the information contained within is heavily influenced by authorial intent in favor of the Franks, the annals remain a crucial source on the political and military history of the reign of Charlemagne.