receives numerous calls to the wrong number before finally having a call with orders to advance. He avoids going over the top by pretending the line is breaking up. He then throws away a telegram ordering him to advance on the grounds that it is wrongly addressed to "Catpain Blackudder" and then shoots a carrier pigeon relaying the same message. Upon inspection of the pigeon's partly charred message, however, it turns out that shooting carrier pigeons has become an offence punishable by court-martial, and Blackadder simply decides to eat the evidence for lunch. When General Melchett arrives at the trenches, demanding an explanation as to why the group hasn't advanced, Blackadder nearly gets away with it by blaming the communication breakdown. Unfortunately Private Baldrick and Lieutenant George unintentionally reveal what Blackadder has done. Finally, there are pigeon feathers on the floor, which Captain Darling and Melchett believe to be white. But after Baldrick points out that the feathers are "speckly," Melchett is enraged, as it was his beloved pet pigeon Speckled Jim, and tries to strike Blackadder, forcing Darling to physically restrain Melchett. Smugly, Darling then informs Blackadder that he's under arrest and, if found guilty at court-martial, he will face execution by firing squad. Blackadder sends for Sir Bob Massingbird, a brilliant lawyer sure to get him acquitted. However, the letters are mixed up thanks to Baldrick, and George turns up as Blackadder's defence. On the day of the court-martial, Blackadder is relieved to know that Darling is the prosecuting counsel – but is mortified to learn that Melchett is the judge. Melchett summarily fines George £50 for wasting the court's time by turning up, takes great pains to locate his black cap, and refers to Blackadder as "the Flanders Pigeon Murderer". George puts paid to any remaining hopes with his poor choice of witnesses: Darling, who provides more evidence against Blackadder, and Baldrick, who takes Blackadder's order to deny everything literally and denies everything, even his name. Darling's case for the prosecution involves calling Melchett to the witness stand and inciting him against Blackadder, after which Melchett sentences Blackadder to death by firing squad without consulting the jury. Back in his cell Blackadder receives an escape kit from Baldrick that fully caters for unexpected situations but lacks the essential tools to actually attempt an escape, and a visit from his friendly firing squad, with whom he trades vicious banter. Another mix-up results in Baldrick delivering a telegram for George's mother to Blackadder, but this provides Blackadder with a way out, when he discovers that George's mad uncle Rupert has just been made Minister of War, and can get Blackadder acquitted. When Baldrick eventually remembers to tell George this after confusion as to which person in the letter can help Blackadder, they decide to celebrate by drinking some Scotch that George's mother sent him – and get so drunk that they pass out before remembering to send a telegram. Blackadder turns up to the execution grounds optimistic, but gets worried when he hears a telegram has not arrived. A telegram arrives and the jailor stops the squad just after the Corporal says 'Aim!' It turns out to be from one of the firing squad saying 'Here's looking at you, love from all the boys in the firing squad.' The Squad then begin again. In the end, though, Rupert sends a telegram anyway after reading about Blackadder's case in the register, believing that Melchett made a mistake and knowing that Blackadder is a close friend of his nephew's. However, Blackadder reads another of George's telegrams and discovers that they did not send it themselves. Out of revenge, Blackadder volunteers Baldrick and George for the mission that Captain Darling calls him about – 'Operation Certain-Death', a mission into No-Man's Land.
