Timeline (Carolingian Gunpowder)

8th Century
771: Charlemagne decided not to move to Aachen, Pope Stephen III, decided to create a sanctuary line to preserve romance language enough, King Carloman I dies, leaving his brother, Charlemagne sole ruler of now reunified Frankish Kingdom, Geberga flees to court of Pavia, Desiderius, furious at Charlemagne, plans a puntitive campaign against Franks and Rome.

772: Vergilius of Salzburg and Adelberger learns to how to do a thunder cannon with ingredients and instructions accidentally drops a candle into pulverized charcoal, which injures him severely and died 5 days later, only Adelberger survived, King Desiderius of Lombards enraged by the repudation of Charlemagne, Emperor Charlemagne leads a Frankish expedition from the Middle Rhine into disputed territory lost by the Franks, Saxon Wars had begun, Charlemagne has more mercenaries and destroying the Irminsul near Paderborn.

773: The scribe of Adelberger and Vergilius brings both discovery to the rest of the scientific community in Paris, It attracts the attention of local Frankish army and the word of potential military uses spread across the Empire, Until it reaches the ears of Emperor Charlemagne, the Cannon is brought before the Emperor Charlemagne's court to demonstrate its power and military potential, Charlemagne told them to use against Saxons and Lombards, Emperor orders it to be produced all over the empire and to be added to its Frankish armies, legions and mercenaries.