Question on military justice

Colonel Vickers not only disobeyed a direct command, he forged orders from a superior in order to lead an attack that led to the destruction of his entire company -- all to satisfy a personal vendetta. CLEARLY he would have been subject to a court-martial if he had survived, but, purely out of curiosity, I'm wondering WHAT the charges would have been and what would have been the punishment.

I looked at the present U.K. code on military justice
https://en.wikipedia.org/wiki/Offences_against_military_law_in_the_United_Kingdom
and the worst crimes I could find were "Recklessly disobeying a lawful command" and "Tampering with or suppressing an official document with intent to deceive." Combined, these two would carry a MAXIMUM of twelve years behind bars -- which hardly seems enough for a forgery that led to hundreds of fellow soldiers getting killed. I'm no fan of the death penalty, but a firing squad would seem to be more appropriate.

Anybody familiar enough with military justice to specify what Vickers would have been charged with?

Yes, I know the film is 99.99% fiction*, and that no sane officer would do such a stunt. But my curiosity has just gotten the better of me.


* That .01% constitutes the fact that there WAS an British cavalry attack on Russian forces at Balaklava during the Siege of Sevastopol in the Crimean War. Other than that, I can't think of much that was accurate.

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Mr Smith: Like the rose trampled on the ground, you took the fall