Originating in the universities during the 10th century where a widely dispersed student body gathered periodically to exchange ideas in a common atmosphere, military units of that period adopted

The answer is: The Dining-In

Explanation:

Commanders realized that camaraderie among their members was extremely important  and  provided an excellent situation in which to recognize outstanding soldiers.

the Dining-In is a formal banquet in which a high degree of military atmosphere is maintained, together with an air of tradition and fellowship to promote cordiality, camaraderie, esprit de corps, and professionalism.

pepin the short[a] (german: pippin der kurze, french: pépin le bref, c. 714 – 24 september 768) was the king of the franks from 751 until his death. he was the first of the carolingians to become king.[b][2]

the younger son of the frankish prince charles martel and his wife rotrude, pepin's upbringing was distinguished by the ecclesiastical education he had received from the monks of st. denis. succeeding his father as the mayor of the palace in 741, pepin reigned over francia jointly with his elder brother carloman. pepin ruled in neustria, burgundy, and provence, while his brother carloman established himself in austrasia, alemannia and thuringia. the brothers were active in suppressing revolts led by the bavarians, aquitanians, saxons, and the alemanni in the early years of their reign. in 743, they ended the frankish interregnum by choosing childeric iii, who was to be the last merovingian monarch, as figurehead king of the franks.