Boom! Boom! Boom!
The thunder of artillery resounded across Olympia's surface like the roars of ancient Titans, rebounding between the Mountains in an unbroken chain of echoes.
The earth trembled, the sky burned, and smoke and dust rose from every corner of the ground, gathering overhead into a gray-black cloud that blotted out the sun and turned day into dusk.
After expending hundreds of millions of tonnes of Ammunition, the Iron Warriors Legion's forces.
Finally opened a breach on the surface of Olympia.
The breach lay on the flank of an enormous Fortress Complex, originally guarded by three staggered defensive walls and twelve bunkers, and considered one of the strongest points along the entire Defense Line.
But beneath the Iron Warriors Legion's terrifying torrent of fire, those defenses collapsed layer by layer like castles built of sand, until a deafening explosion tore open a gap hundreds of meters wide.
Rubble and metal shards were hurled into the sky, then rained down, pitting the ground with countless craters.
Next came what the Iron Warriors did best: siege warfare.
Aurelian-pattern Main Battle Tanks bearing the Iron Warriors Legion's insignia were moved behind the battle line.
Those enormous steel behemoths advanced slowly amid the low rumble of their engines, their tracks crushing ground that artillery had plowed over countless times and leaving deep ruts in the soft soil.
Under the frontline Legion Commander's direction, twenty Aurelian-pattern Main Battle Tanks formed a line, spreading across the uneven terrain to create a battlefront hundreds of meters long.
Their Turrets turned slowly, aiming their long, imposing barrels at the enormous fortress ahead.
Then twenty 1,381-millimeter L/60 heavy Railguns raised their muzzles and took aim at their targets.
Those barrels were forged from special Ceramite Alloy and adamantium, their surfaces covered in cooling grooves and reinforcing rings,