Here you will see a expendaple drone designed for military use
Here is a simple expendeble drone as opened
The drone is folded in to a capsule
Here is a vehicle equipped with pressure powered device that is able shoot the caplules in to air. As soon as the capsule is out of the tube it will open and the drone also opens its wings. In the device there are multible capsules.
This way nobody needs to go out of the vehicle (to cannonade) to dispatch a drone and as it is also expendaple it is also not needed to go out to salvage it.
It is possile use drones for guiding missiles