Conversation so far:
What did the Kray twins have to do with the National Service in the British Army?
The Krays were called up to do National Service in the British Army in March 1952
What did the Kray twins do at the depot of the Royal Fusillers?
Although the Kray twins reported to the depot of the Royal Fusiliers at the Tower of London, they attempted to leave after only a few minutes.
Why did the Kray twins attempt to leave the depot of the Royal Fusillers?
Were the Kray twins forced to stay in the army?
The corporal that tried to stop the Kray twins from leaving the Royal Fussilers got punched by Ronnie. The police arrested them and were turned over to the army.

Question: were they charged for this?
Self-contained rewrite: Where the Kray twins charegd for punching the corporal at the Royal Fussillers?