You'll note that Aerospace Engineers get the most money. This is because they design things like the Stealth Bomber that can deliver ordnance from thousands of miles away without being detected.
Chemical Engineers are second, because they make the stuff that goes in that ordnance, and everyone wants as much blasty as they can get per pound of payload.
Computer Engineers design guidance systems to make sure that the payload gets to the proper place, at least to the nearest meter.
Electrical Engineers design the hardware that the Computer Engineers interface to.
Mechanical Engineers design the hardware that is controlled by the stuff the Electrical Engineers design.
The Civil Engineers? They design the targets.