Behind the city gates, the Unmanned Combat Vehicles that had long been on standby roared out.
They were low and bulky, their hulls covered in gray-black composite armor. Four independent tracks spun at high speed, churning up great clouds of gray-white dust.
The Unmanned Turrets on their roofs constantly scanned the wasteland. Their missile launch pods and rapid-fire cannon barrels had already been unlocked.
Close behind them came rows of tracked robots.
Carrying ammunition crates, mine dispensers, and seismic detection equipment, they quickly spread out along preset routes, burying sensor-triggered mines and directional explosive devices in softer sections of rock as they advanced.
There was also a legion of humanoid robots, advancing at a jog under the command of Fifth-Order Robots.
In the air, hundreds of Combat Drones rose from the landing pads.
Reconnaissance drones climbed higher, their electro-optical sensors locking onto the distant ground.
Attack drones skimmed low, the safeties on their belly-mounted missiles disengaged, ready to swoop down on targets that had just broken through the earth.
More transport drones carried supply crates and reserve ammunition slung beneath them, moving behind the combat vehicles.
There was not a single living person in the entire Unmanned Legion.
Their mission was to hold back the Demon Tide, using every artillery shell, every missile, and every machine to buy time for the base and eliminate as many of the Demon Clan as possible.
Lin Mo stood in the Command Hall, watching the Steel Torrent outside the base on the screen.
Unmanned Combat Vehicles drove out through the four city gates in batches, spacing themselves out across the wasteland as they advanced toward preset positions a hundred kilometers away.
At the distant horizon, black clouds of dust were rising.
That dust came from the rock layers thrown open as Burrowing Earth Dragons