The concept, incorporating Low-Cost UAV Swarming Technology, or LOCUST, developed by the Office of Naval Research, would bring a flotilla of weapons, including underwater drones, unmanned surface vessels and underwater mine countermeasures.
“Instead of Marines being the first wave in, it’ll be unmanned robotics … sensing, locating and maybe killing out front of those Marines,” he said. “We see that ‘swarm-type’ technology as exactly the type of thing — it will lower cost, dominate the battlespace, leverage capabilities … and be able to complicate the problems for the enemy.”
In WW2, The Navy shelled Iwo Jima for days prior to Navy Assault
Iwo Jima was a tough fight despite Navy shelling for days. Japanese soldiers had dug in and were in caves.