When Schultz rides off on the motorcycle, leaving Klink in the sidecar, the supports holding the sidecar up are visible. The sidecar should have fallen over toward the camera (to Klink's left).
In the denouement, when Klink gets out of the sidecar, he goes over to Hogan and says, "Now Hogan, I want you to say, 'Colonel Klink, your car is ready.'" When Hogan says, "Alright, 'Colonel Klink, your car is almost ready.", his lips indicate he actually said, "OK, Colonel Klink, your car is almost ready."
Hogan and Crittendon talk about midnight as 2400, but the military refers to midnight as zero hundred.
Crittendon confuses 2400 with 9:00 PM. Being British he shouldn't be confused with what Americans call "military time" since for him it is "plain regular time"