Engineers in war!

The question itself says that the mission of the army is to kill as EFECTIVELY as possible. Well, having the engineers calculate what target to hit, where to hit it, how to hit it, will affect the effectiveness of the army. To make a comparison of the WW2 and the Iraq war in terms of technology is impossible. Now, the army has everything they need to minimize the casualties in an attack. Before, they just flew around droping bombs hoping and praying to kill as less civilians as possible. Now, they have many kinds of bombs and missiles with a great accuracy that can hit precisely the target. Now they have the duty to limit the casualties as much as possible. All these changes are hard work of engineers, trying to make the life easier for the army.
Economically talking, a bomb (or missile) costs thousands of dollars. When the army decides to attack a certain objective, it is the engineers’ job to calculate how or where the objective should be hit so no bombs or missiles are wasted.
So, yes, I fully sustain the engineers’ role in today’s army. Effectiveness is a priority to win a war, and engineers bring that everywhere…