The Battle of Bolimów was a notable engagement on the Eastern Front during World War I, taking place in early 1915. It was during this battle that German forces first utilized poison gas on a large scale, in a tactical move designed to exploit the vulnerabilities of the Russian army. The Germans released chlorine gas, which was one of the first implementations of chemical warfare in a major military conflict. The deployment was aimed at breaking through entrenched positions and destabilizing the enemy's morale. The use of gas was relatively novel and intended to catch Russian troops off guard. However, difficulties such as wind direction affected the gas's deployment and rendered portions of the German attack ineffective.Despite the tactical aims, the psychological impact on soldiers and the nature of warfare was irrevocably changed. As gas wafted across the battlefield, it created chaos, fear, and confusion. The gruesome consequences of the gas—suffocation, burns, and long-term health effects—pushed the boundaries of warfare ethics. Bolimów showcased early on how chemical warfare could alter strategies and the human cost of war. This initial instance of widespread gas usage set a concerning precedent, as both sides of the conflict began to adapt their tactics in response.