In full rout, the Martian forces raced to converge upon a large city.
In a tight circle, the Martians braced themselves. Power beams came from the city to feed them, and as Terra came before them they lashed out with the power of planet-supported fire. Terra englobed the city, but it was a questionable success.
From horizon to zenith, the Terrans poured their power into the Martian hemisphere. The ground about the city ran hot, and the grounded ring tilted and mired down, but they continued to fire back. Stalemate set in; Terra could not breach that close-knit hemisphere and Mars could not fight off the pressing Terrans. Destroyed torpedoes filled the annular gap with explosions, and crossed MacMillans flared to sear the eye.
Then a mile inside of the Martian ring, the ground heaved upward, and the ugly snouts of underground raiders appeared. Their protected turrets lifted out of the blisters and began to pour energy into the Martians from behind. The Martians swept downward from their hemisphere and fought back against the pincer-movement. The topmost Terrans pressed downward as a second ring of underground raiders appeared to bolster the first wave.
The city erupted in tiny areas as Terran undergrounds broke the surface, blasted the interfering building away with torpedoes, and lifted to add to the ever-increasing energy of the battle.
The Martians hopped backwards over the ring of undergrounds and set up an inner line. At point-blank range, and almost plate to plate, the Terrans massed their energy in a flaming wall of destruction, fighting the Martians back, foot by foot.
The circle tightened upon a tiny, central park. Spacesuited figures worked furiously under a disperser screen; they were putting the last touches upon an alien projector. No light came to them from without, but they could be seen by the light of their own working floods. Outside of the projector and the disperser, a ring of large detector-coupled MacMillans were dancing from point to point and dropping Terran ships with each point.