The Ten Standard Firefighting Orders are a set of systematically organized rules designed by the USDA Forest Service to reduce danger to personnel and increase firefighting efficiency. The orders were developed from lessons learned in a number of major wildland fires that led to the deaths of trapped firefighters including the Shoshone National Forest Blackwater fire of 1937 and the Helena National Forest Mann Gulch Fire in 1949.
The original Fire Orders were designed as a checklist for firefighting personnel to bear in mind prior to engaging a fire. In the 1980s, the order was changed in an attempt to create an easy-to-remember list, with each order beginning with an initial of “Fire Orders”. After much debate and numerous firefighter fatalities that found most of the Fire Orders were being broken, a decision was made to revert back to the original Fire Orders.
Source: https://en.wikipedia.org/wiki/Ten_Standard_Firefighting_Orders