The Doomsday War, also known as the Third Great Dream SMP War, the Second L'Manberg-Dream SMP War, and the Wither War, was a major war on January 6, 2021 in L'Manberg. The war marked the end of L'Manberg, and served as the finale of the Vengeance Era, leading into the The Disunion Era.
After Dream and Technoblade made their escape from the Community House, they met up at Technoblade's base with Philza. They started creating a plan for destroying L'Manberg; Technoblade would be on the ground, spawning withers and fighting the entire server, while Dream would be in the air placing TNT, which would drop onto and destroy L'Manberg. Dream mentioned he had a "secret ace" that he couldn't tell Techno about at the moment, but would give them the decisive win in tomorrow's war. Technoblade and Phil also relocated the Hound Army, as Tommy knew the previous location, and would likely attempt to stop the hound army from being activated. While other members were away, Dream constructed an obsidian platform above L'Manberg.
At the beginning of the day, Ponk finished up gathering supplies after noticing how little anyone had contributed to the chests but Fundy decided to blow up all of L'Manberg's supplies. After he showed Niki the exploded the chests, she was pleased and they were finally back on good terms.
While everyone was getting ready for the war, Ranboo decided to save an ender chest and one of his cats, hiding the cat away from L'Manberg near his panic room. During this, he mused that people took his side because they realised they were going to lose, and that they were scared of that since they had lost many times before. Later, he decided to save Squeeks, as he didn't want to backstab Tubbo again after being revealed as a traitor the day before.
Many others were still left deciding whether or not to actually fight in the war, including Quackity, who was prepared to leave L'Manberg and the Dream SMP as a whole. In the end, Quackity decided that it was more important to take yet another stand against Dream, but expected to lose. CaptainPuffy also decided to defend the nation, as she had friends who lived there and she felt that it was important to protect her friends. Sapnap was convinced to side with Tommy after he was given his long lost fish, Mars, that Tommy had retrieved from the ocean.
Phil and Technoblade began making fireworks about half an hour before the war was set to start, and Dream met with them inside Technoblade's cabin. Upon meeting, Dream explained that his ace was a spy inside L'Manberg who gave him intel. Phil wanted to join in the plan, but Techno didn't want Phil to die for his grudge. Phil said that he also had a grudge against L'Manberg, and they decided that Phil would be aiding Techno in spawning withers. Knowing that Phil only had one more life left, Techno also gave Phil a totem of undying as insurance.
After arriving at Dream SMP, the anarchists and Dream went underneath L'Manberg went to grab the Hound Army. The Hound Army was then splashed with strength and invisibility potions. Techno and Philza started making their way towards the entrance of L'Manberg, and Dream made his way to his platform above the country.
Technoblade joined the L'Manberg army's voice-chat and announced his presence in L'Manberg. None of the members believed him, but they quickly discovered that Techno was not lying due to the large amount of dogs surrounding him in the middle of L'Manberg. The L'Manbergians quickly discovered that many of the members had flaked out and decided not to join them. When Tommy called for supplies, Tubbo broke the news that the supplies had been destroyed and had nothing but what they had in their inventories. Despite all of these hindrances to L'Manberg's battle plan, Techno seemed to be outnumbered and was thought to be likely to run out of supplies in a prolonged conflict.
The army for L'Manberg moved to attack Techno. However, their efforts were rendered ineffective by his Hound Army, which would quickly swarm any attacker. Techno was able to stay mobile and avoid direct encounters, picking off some of the weaker members of L'Manberg. The L'Manberg army was able to kill off most of his Hound Army, and once the Hound Army was nearly defeated, Techno gave Phil the signal to start spawning withers. Fourteen withers were spawned, and the L'Manbergians were quickly overwhelmed by the combination of the withers and Technoblade. Techno had also splashed invisibility potions on everyone, leading some to attack their allies instead of the withers, out of pure confusion. The withers bought valuable time for Techno and his allies, and the chaos of shooting, fighting, and screaming continued until Dream finished the machines.
After Dream finished his preparations, TNT began raining down on the battle as Techno continued shooting into the fray. Multiple people fleed, fearing the TNT raining down. In the chaos. After the TNT began to die down, Techno and Tommy began to battle with both swords and words, fighting over loyalty, betrayal, and the way the government had destroyed everything
As the chaos died down, the L'Manbergians, neutral members, and the anarchists began to talk amongst themselves. Tommy and Tubbo spoke to each other on Dream's obsidian platform above the destroyed city. They bond, agreeing that they must regain possession of the discs and fight back against Dream. While they spoke, Dream continued maintaining the TNT machine in the background. Everyone else sat in a voice-chat talking, with Techno stating he wanted to see L'Manberg turn to bedrock and be chunk-errored. Some simply stayed silent, looking upon the canyon L'Manberg had become.