It allows readers to see the man behind the uniform.
Have the General say one thing, while the ledger shows he meant the opposite.
A list of things he has sacrificed, including personal feelings.
Side-bar notes showing the General's true intentions for a mission.
The shifting tone of the ledger entries tracks his growing obsession. 🚀 How to Implement It
It creates a "ticking clock" feeling as the protagonist uncovers hidden agendas.
This is an interactive, "living" document or hidden epistolary element within the story that tracks the General’s private observations versus his public commands.