sorry but if your losing mates to a war that they "voluntarily" joined then i can't have much sympathy if they get injured/die.
These people sign up to do a (fundamentally) good thing: bring peace to the world, and fight for their country.
Yes, death and / or injury is an occupational hazard, but everything that can be done to make their job safer is definitely a good thing.
What you just said is basically, you don't have any sympathy for a police officer who gets shot while trying to make the world a better place.
Your edit-fu is strong.
You really think that a military organisation like the US army would actually BUY a weapon if it was so easily stopped by a company-produced countermeasure?
For a start, this weapon was MADE by US companies, FOR the US army; this is the sort of technology they are not going to sell to other countries, unless they really trust them.
As I said above, human life is important; it isn't the MOST important thing, but it's pretty fucking high up.
Just about anything we can produce that will help in a war effort, and save human lives, is a damn good investment right off the bat.