The Kuwaiti oil fires were caused by the Iraqi military setting fire to a reported 605 to 732 oil wells along with an unspecified number of oil filled low-lying areas, such as oil lakes and fire trenches, as part of a scorched earth policy while retreating from Kuwait in 1991 due to the advances of US-led coalition forces in the Gulf War.[3] The fires were started in January and February 1991, and the first oil well fires were extinguished in early April 1991, with the last well capped In novemb