Mandrake (Peter Sellers)’s Timeline and Summary

At Ripper's orders, Mandrake reluctantly issues Plan R.
Mandrake discovers Ripper's deception and tries to stand up to the General.
He's locked in the office and threatened with a gun by Ripper.
He's gradually realizing that Ripper is absolutely nuts.
The Group Captain reluctantly helps Ripper shoot American troops.
He tries unsuccessfully to convince Ripper to give him the recall code.
Mandrake is horrified when Ripper shoots himself.
On his own, he figures out the recall code.
The Group Captain forces Guano to let him call the President and deliver the code.