These short stories fill in the first part of the background of Reinhard von Lohengramm and Siegfried Kircheis before the start of the main Legend of the Galactic Heroes series. In these stories, they journey to a planet of ice and are betrayed by their commanding officer, they investigate a possible murder at their alma mater, Kircheis takes a vacation and gets involved in a plot against an admiral, and finally the major 12-part story of Reinhard at Iserlohn, a battle fortress that protects the Galactic Empire from the Free Planets.

These short stories fill in the background of Yang Wenli prior to the Overture to a New War movie, and continue with the background of Reinhard and Kircheis where Gaiden 1 left off. In these stories, Yang becomes the Hero of El Facile and is given a research investigation of some delicacy, Reinhard's first assignment to a ship at Iserlohn, Reinhard deals with a formal duel among the politics of the nobles, Reinhard's secret mission into Free Planet territory, and the Third Tiamat Battle, wherein Reinhard earns the rank of General at the age of 19.