Everyone, men and women alike, left their work instantly. Dozens of the electrically-motored surface cars were waiting, and soon they were racing along the road. Within the hour they had reached the twilight zone to reinforce Donli's group.
Each person was equipped with an electric rifle which, at the longer distances, stunned but was not fatal. And there were quantities of atomic grenades. The new Earthmen retained their atomic rifles and neutro-pistols, as they better understood the operation of these weapons and could use them to more advantage.
The attack had not yet come but Donli was expecting it at any minute. Each group took up its assigned position behind a barrier. Mark found himself beside Janus and was glad, for he liked that blustering, red-bearded giant.
"It's going to be hell," Janus promised, peering into the twilight gloom. "We have to wait for them. The Perlacs can come over into our lighter gravity, but their gravity'd be fatal to us!"
Mark nodded. "It means we'll be fighting a strictly defensive battle."
The twilight beyond faded into the darkness of the huge forest, and not a Perlac was to be seen. Not so much as a moving shadow. But they were there, Mark knew, thousands of them; and when they came it would be silently.
And silently they came. Mark's first intimation was the explosion of grenades far down the line, and then he saw them—hordes of Perlacs, heavy of limb, but coming with amazing speed. Most of them were using cross-bows, and Mark realized that some of the shafts were equipped with metal-tipped explosives. Then he was too busy for further observation, as he brought his atomic rifle to bear.
The old style electrics were at work too, all along the line; and the grenades blasted huge gaps in the advancing tide. But still they came, moving now across the lighter zone. Thousands hadn't been an overstatement! The dark tide came rushing over their stunned and dead.
And now those explosive tipped shafts were having effect. Several of them struck a barricade next to Mark, and tore the metal from the foundations. Now Janus, beside him, was bringing the neutro-pistol into play.
Savagely Mark swung his beam in a never-ceasing arc, exulting at the swath it cut before him. Further down, Driscoll, Kaarj and the others were doing the same. Together with the grenades it seemed to stem the tide, but only for a moment.