fire at will

fire at will

1. (military) Fire when ready. A command that allows troops to use weapons at their discretion and choose their own targets, allowing the individual soldier a greater freedom of timing the shot with target movement and similar.
   • 2007 September 25, Bungie, Halo 3, spoken by Rtas 'Vadum (Robert Davi), Microsoft Game Studios, Xbox 360, level/area: The Ark:

     All cruisers, fire at will! Burn their mongrel hides!

• In contrast, the plain command fire means to open fire at once.