Y36

Operations of war
  

War operations involving explosion of marine weapons
  

War operations involving destruction of aircraft
  

War operations involving other explosions and fragments
  

War operations involving fires, conflagrations, and hot substances
  

War operations involving firearm discharge and other forms of conventional warfare
  

War operations involving nuclear weapons
  

War operations involving biological weapons
  

War operations involving chemical weapons and other forms of unconventional warfare
  

War operations occurring after cessation of hostilities
  

War operations, unspecified