One issue with using drones in a high threat environment is that it needs to be able to communicate with a controller. Not only can that communication be potent

One issue with using drones in a high threat environment is that it needs to be able to communicate with a controller. Not only can that communication be potentially jammed, it can also be used to triangulate the coordinates of the drone (and controller) which limits your ability to surprise the enemy. Then you need to consider both bandwidth and latency. Latency matters because that lag between the drone operator getting data and sending orders greatly degrades your reaction time, which can be critical in situations like air-to-air engagements. Bandwidth matters because if you have a swarm of these over enemy territory all using satellite communications you won't be able to stream high quality video feeds back to your operators. That matters a lot if you are searching for targets. I think you'd need the drones to have very high autonomy, which is tricky both technically and ethically.