The game has a considerable number of cutscenes in between chapters. You can view them from the Archives of Revolution book in the main menu or watch the videos below. Some of the operation videos are incorporated already in the walkthrough chapters of this guide.
Between Regret and Homesickness
Conversation
Names Immortalized
Invasion
A Kingdom Divided
The Pen is Mightier
Unrest
At The Transport Base
Fissure
Suspicions
Hans's Question
Attack on Velgiev
Assault the Empire's Tranport Base: Battle of Velgiev
Unspoken Words
Accusation
Hesitation