Modern technology most of which derives from the silicon chip has already made naval surface combatants, armored land vehicles and helicopters over a battlefield obsolete death coffins. The warriors in future wars will be nerds sitting behind a video console.
I wonder if all the billions spent on stealth strategic bombers like the B-21 is just an exercise in futility, given what one would cost, will it ever be used in anything except a nuclear war based on the fear of getting it shot down.