Wars results in immediate deaths and destruction, but the environmental consequences can last hundreds, often thousands of years. And it is not just war itself that undermines our life support system, but also the research and development, military exercises and general preparations for battle that are carried out on a daily basis in most parts of the world. The majority of this pre-war activity takes place without the benefit of civilian scrutiny and therefore we are unaware of some of what is being done to our environment in the name of 'security.