Units of the Armed Forces of the United States and co-belligerent countries may be awarded The Presidential Unit Citation for extraordinary heroism in action against an armed enemy on or after 7 December 1941. To be awarded the citation, the unit must have been set apart and above other units participating in the same campaign in their display of gallantry, determination, and spirit de corps under extremely difficult and hazardous conditions to accomplish the mission. The degree of heroism necessary to be granted the award is the same as that which would justify the award of a Distinguished Service Cross to an individual. It is not enough to have been in combat duty for extended periods of time or to have participated in several operational ground or air missions. On most occasions the award is warranted when units have taken part in single or successive actions that cover comparatively short time spans. The actions required to be awarded the citation could not reasonably be performed for any extended time periods except under very unusual circumstances. Rarely will a unit larger than a battalion meet the qualifications for award of this decoration.