Court martial
A court martial was a military court. (TV: The War Games, PROSE: Monitor) It had no jurisdiction over civilians, except in an area under martial law. As spoken by the Second Doctor, its plural was courts martial. (TV: The War Games)
Brigadier Alistair Gordon Lethbridge-Stewart had the authority to court martial UNIT employees who disobeyed orders. (TV: The Green Death)
Wilfred Mott once said that in his day, a soldier who pointed a gun at an innocent civilian would be court martialled. (TV: Turn Left)
Staal told Luke Rattigan that a Sontaran would rather be court martialled than show pain. (TV: The Sontaran Stratagem)
In the War Lords' simulation of World War II, the British Army found the Second Doctor and Zoe Heriot guilty of espionage, and charged Jamie McCrimmon with desertion. Smythe used his spectacles to convince the jury to find them guilty. Jamie was to be taken away to a military prison, Zoe was sentenced to ten years penal servitude, and the Doctor was to be executed by firing squad at dawn. (TV: The War Games)
Bret Vyon threatened to have "every fool in CCE" court martialled. (TV: The Daleks' Master Plan)
Vorshak told Preston that he would answer to a court martial after Karina was found dead. (TV: Warriors of the Deep)
On the Inferno Earth civilians could be court martialled in certain circumstances. According to Brigade Leader Lethbridge-Stewart the Defence of the Republic Act granted him the authority to sentence the Doctor to death by firing squad for espionage. Court martial sentences could not be carried out summarily; The paperwork detailing the charges, evidence, and deliberation by the prosecuting officer had to be filled in correctly prior to the execution being carried out in order to comply with the law; prompting the Doctor to describe Lethbridge-Stewart as "a good little bureaucrat". A civilian accused of court martial offences could be handed over to the civilian justice system and be treated more leniently if they could successfully argue their actions were a result of eccentric political beliefs or mental illness rather than financially or politically motivated treachery. (TV: Inferno)