His findings led to the widespread use of antiseptics such as phenol.
Explanation:
Joseph Lister was a British surgeon. He is not known for being a great doctor, or for having an impeccable surgical technique, but for discovering that the use of antiseptics before and after surgery could save many people's lives. He was a great bacteriologist and knew that bacterial infections were serious, but that they could be prevented with the use of antiseptics. After their discoveries, antiseptics became very popular, among them phenol, which was one of the first to be commercialized and used.
The germans lost so many soldiers, and equipment/armory that they couldn't attack the allies again. It destroyed the German army, and lead to the end of the war.
