Once through the door, he clambered up a wooden staircase leading to the roof. As quickly as Belisarius was moving, the effort of negotiating the steep and narrow stairs was considerable, even for a man in his excellent condition and wearing only half-armor. He felt a moment's sympathy for his cataphract bodyguards. They'd be huffing by the time they made the same climb.
The staircase debouched into a small chamber. Again, Belisarius squeezed through a tiny door, and emerged into open air. Behind him, the northern wall of the warehouse reared up like a battlement. Ahead of him, the brick roof—braced underneath by heavy beams—formed a flat expanse stretching toward the sea. He could see the delta, glistening under a midday sun.
Belisarius had selected this warehouse for his headquarters because of its odd design. At one time, he suspected, the north wall of the building had been the outer wall of Charax. It was built like a fortification, at least—which might explain the tiny doors. When Charax expanded, and new walls were built, some enterprising merchant had simply built his warehouse against the six-foot-thick northern wall. The end result, so far as the Roman general was concerned, was as good a field headquarters as he could ask for. The massive north wall gave some protection from artillery while, at the same time, the flat roof provided him with a perfect vantage point from which to observe the delta.
He saw Maurice standing on the southern edge of the roof. There was no railing to keep someone from pitching over the side onto the docks thirty feet below, but Maurice seemed unconcerned. The chiliarch had apparently heard the squeaking of the door, for he was already looking at Belisarius when the general emerged onto the roof.
"Come here!" he hollered, holding up the telescope. "There's a new development I think you should consider."
Belisarius hurried over. As he made his way across the fifty-foot-wide expanse, he quickly scanned the entire area. From the roof, he could see all of southern Charax as well as the great delta which extended southward to the Persian Gulf itself, perhaps ten miles away. Charax had been built on the east bank of the largest tributary which formed the Tigris-Euphrates delta, on a spit extending south and west of the Mesopotamian mainland. The tributary could hardly be called a river. It was so broad that it was almost a small gulf in its own right. For all practical purposes, Charax was a port city which was surrounded by water from the west all the way around to its east-by-southeast quadrant.
His eyes scanned right, then left. He could see nothing that would cause Maurice such apparent concern. There were masses of Malwa troops on both banks of the tributary, but they had been there since the first few days of the siege. The Malwa had tried to position siege guns on those banks, where they could have fired into the harbor area, but had given up the effort after a week. The ground, as the reeds which covered the banks indicated, was much too soggy. The troops were there simply to keep the Romans from escaping while the main forces of the Malwa tried to hammer their way into the city from the north. They also kept the galleys patrolling the delta supplied with provisions.
He turned his eyes to the fore, looking for the galleys. Again, he could see nothing amiss. There had been upwards of twenty galleys stationed in Charax, when Belisarius broke into the city. Half of them had been on patrol, and all but three of the ones moored to the docks had managed to get free before Roman troops could seize them.
Since then, the Malwa had used the galleys to maintain a blockade. Belisarius' obvious escape route was to sail out on the cargo ships he had captured. But there was no way to get those ungainly vessels through a line of war galleys. The huge Malwa cargo ships might have been able to withstand ramming—some of them, at least—but the galleys were armed with rockets as well as rams. At close range, with no room to maneuver, rocket volleys would turn unarmored cargo ships into floating funeral pyres.
As it was, Belisarius' soldiers had been hard-pressed to extinguish the small conflagrations started on the moored ships by long-range rocket fire. Link was making no pretense of saving the cargo ships to evacuate the Malwa troops. Even though the vast majority of the rockets never came close to the docks, the galleys as well as the troops stationed on the banks had kept up a steady barrage since the beginning of the siege. Belisarius didn't want to think about the disciplinary measures which Link must be taking, to keep its troops driving forward into what, by now, even the dimwits among them must have realized was a suicide mission.