?   Boost phase anti-ballistic missile applications are first up, because, frankly, nothing else can do the job.

 

?   Anti-(small)drone, anti-mortar, anti-bombardment rocket, and anti-cruise missile.  We are already starting to seeing these systems appearing using autocannons, but they have extremely limited capability against crossing targets.  A laser will not have that problem, or a problem with collateral damages from unexploded munitions and parts of expended munitions falling to earth.

?   Development of a working anti-artillery system will reinvigorate the concept of the fortress on land and the battleship at sea. 

?   If a mobile system can be created then artillery's dominance over the battlefield will be seriously reduced, and some weapons like the NLOS missile may become rapidly obsolete.

?   The last to be deployed (if ever) will be a laser defense against direct fire projectiles.  This will only happen if the size and cost can be reduced enough to permit the system to be deployed on every armored vehicle.