Around 50 million people across the world are affected by urban warfare. When conflict occurs in cities, the natural environment has historically been relegated to an afterthought, but both the immediate and long-term environmental consequences of urban warfare are serious. This article looks at actions that can be taken to protect the natural environment – and through this, the population – against the effects of urban warfare when fighting in urban areas. It is intended to be a part of the conversation about what parties to armed conflict can and should do to give effect to their legal obligations under international humanitarian law and international law more broadly, with a specific focus on the natural environment when fighting in urban areas.