@Madness
"How on earth can they continue to allow bullets, grenades and bombs etc"
They are essential parts of war, just, unjust or otherwise. You could throw flower petals, but they would lack a certain impact.
Luckily, not every soldier in a firefight gets killed/injured. But they all shoot their guns, and if you can protect them from hearing damage/tinnitus, without hindering their capability to operate, why would you begrudge them that? Money well spent!
Mine's the one with the ringing ears, not kidding
m.