From the Fourth Century, picketed to the immediate right of the section which Clodius' century held, a non-com was scrambling along the guardwalk toward Vibulenus. It might be Niger, promoted to watch clerk when Clodius took the neighboring century. That would be a pleasure, because there was very little fraternization across the ranks when the legion was in the field- and they had been in the field an unexpected three months already, with victory more distant every day that brought no beneficial change…

"Maybe they'll run out of food," Vibulenus said glumly. He drew his sword and held it so that on the polished flat of the blade could be seen the reflected tower, blurred and less substantial than the reality that was worth a man's life to view from this close up. "Or water."

Three crossbow bolts spat down, thumping the bulwark, the guardwalk near the sword's shadow, and the communications ramp where the corduroy surface had been adzed smooth. "Or arrows, though there doesn't seem much risk of that."

Niger, who was proud of his new red-tufted crest but had better sense than to mark himself here with insignias of rank, squatted to a halt beside Vibulenus. "Third Century reports normal progress, sir. We have enough fascines filled to advance another row, as soon as it's dark enough to set the anchor posts."

Niger took a quick look over his shoulder, then rose on his haunches to be sure that no one save native auxiliaries were close enough to overhear anything he said to his immediate companions. "Hi, Gaius," the young legionary resumed. "Gnaeus. Not much happening, is there?"

"How's your mead coming, boy?" asked Clodius Afer in a tone so dry that the tribune was not sure whether the veteran was being sarcastic or just making conversation on a subject about which he was willing to be friendly.

The older veteran. Everyone in the legion had seen and survived at least five campaigns now.

"Well, you don't find bees in a pine forest, you know," Niger said, rightly doubtful as to whether Clodius did know what was to him obvious. "They nest in trees, but they need flowers to eat, and there wasn't anything open around here before we came."

Niger's eyes scanned the slopes behind them deeply gouged by run-off from the brief storms which added to the legion's misery-and replenished the defenders' water supply. "You know, sir," he went on, professionally respectful now that he was considering a professional problem, "I been thinking. If we build the ramp much nearer the walls, they're gonna burn us out same as before."

"You've got company in that opinion," Vibulenus said in something between agreement and sarcasm himself.

A ballista, reloaded more quickly than its fellows, banged. The crashing disintegration of its missile was followed, for a wonder, by the vertical collapse of part of the tower's facing. It left a patch of rock of a darker color across as great a width as a man could span with both arms. Perhaps in a hundred years…

"So you see, sir," Niger went on with the enthusiasm of invention, "what we need to do is stop the ramp right where it is so they can't pour fire on it-"

"And see if the cursed place weathers to dust any time soon?" Clodius Afer interjected.

"No sir," the watch officer said in a tone of injured simplicity. "We can reach the wall from here with a ram or a drill, if it's long enough. If we use that tree-" he pointed at the long bole Vibulenus had already noted "-for instance."

"It'll-" said the centurion.

"And," Niger continued with uncharacteristic determination, "if we cover the outside with bronze sheeting so's they can't burn it up no matter whether they try all night."

"Hey," said Clodius Afer in surprise. "You know, sir, that just might…?"

Vibulenus grimaced, wishing he could be more hopeful about what was, after all, a more imaginative notion than any the Commander had offered. "No," he said, "even if it doesn't sag too much over the distance-" Twenty unsupported feet; the tribune knew from the Greek architect superintending construction on his family's estate how much a beam would flex, and this one covered besides with a heavy layer of metal… "-then they'd snag it with ropes from the top of the wall, and we'd be too far away to save it."

"What we really need," said Clodius Afer with gloomy thoughtfulness, "is one a' them lasers the Commander's got. Suppose we could ask him just the once, to turn the trick?"

The short answer to that was no, you cursed fool-the Commander's guild wouldn't have bothered to buy them from the Parthians, buy Romans who knew how to lock shields and use a short sword, if there'd been a chance of using the guild's own weapons. But Vibulenus would not have said that to a friend; and anyway, the implications of the question showed that the non-com had an idea that was still unclear to the tribune.

"Do you think the lasers could tear a hole in those stones?" Vibulenus said doubtfully. "I didn't think it was that…" His voice trailed off as he tried to remember what the shield looked like after the bolt had struck it. That hadn't been so very long ago, except that… everything got mixed up between, between battles. They fought, they regrouped on the ship after the guild traders landed in their even larger vessel. And then the legion drank and slept and played in the amphitheater with whatever fantasy struggle was going on there now. Injuries that the Medic had repaired aged to true healing, sometimes with traces of scar tissue: the tribune's left biceps still had a twinge from the stab wound he couldn't remember getting in his first melee.

And then, when the deep red dye had faded from the flesh of even those who had been most seriously wounded-those who had been killed, and whose eyes never lost that awareness-everybody woke up in the morning, and the Commander was briefing them for another battle, at another place where the air was wrong and the sun was wrong… and nobody was sure any longer what was right.

"Right" was not getting your skull smashed by a ton of rock, and not being engulfed in a fire so hot it burned your bones to a pinch of lime.

"Gee, d'ye think so, sir?" Clodius Afer said, breaking in on the tribune's memory of flames shooting higher than the screams of the men they encircled. The centurion's brow furrowed as he made his own attempt to visualize the laser demonstration. It kept getting mixed up in his mind with what had happened to a kid in his century, Publius Pompilius Rufus, scarcely even blooded…

"No!" snapped Afer, crushing that train of thought with his vision of the present situation. "No," less forcefully but still firmly enough to surprise the men beside him; "what I mean is, they couldn't pour their fire on us if we had that laser. And peckin' through the wall, then-Pollux, that's no problem. The mortar they're set with at the base, that's been burned to Hades. The stone're big enough but that just means you've got a hole you kin crawl through first time you get one clear."

"Yeah," agreed Niger while Vibulenus was still grappling with the unstated part of the equation. "Hot as everybody is after the first time, I betcha four men with picks'd have a block out in a couple minutes easy. Then she's kitty bar the door."

"Mustn't forget there's gonna be another layer behind the facing blocks," Clodius cautioned the junior non-com, professionally analytical now that he had begged the initial question of the laser. "Maybe fill, too, but that'll be rubble, and anyway, we tear a hole big enough and the fuckin' tower falls in, makes us a better ramp right damn through their wall than anything we're gonna build from the outside. Baby! Then we gottem."

To Vibulenus, it was all a variant of the discussion that began. "If that camel-fucker Crassus had had sense enough to march us along the river instead of trying to cut across the fucking desert…" Hindsight was a useless waste of breath, and preplanning that started off with an impossibility was worse. That wasted not only time, the one commodity besides frustration which the legion had in great plenty just now; it wasted thought which might otherwise have been put to useful purposes.