From The Dim Future Wiki
Combat is a handled as an implied ability on characters that reads:
: This character deals X damage distributed any way among any number of target permanents or areas, where X is less than or equal to this character's attack. Each target permanent must be assigned at least one damage. This ability has a range of 0. This action is called a combat action. 
- ↑ The name combat action is only given to allow other cards to treat combat actions specially.