Hidden Military Commander: the Director Begged Me Not to Show Off

"On the surface, he is the most greedy and lustful 'Living King of Hell' in the military command, but secretly he is a red agent who makes the enemy frightened. Relying on three pieces of intelligence that are refreshed every day, he is promoted at the speed of light in the military command while continuously sending top-secret intelligence back to the organization. Even the wife of the underground party around him thought he was a traitor, until the day of victory..."