The calliope's eight stubby barrels were mounted on the back of a large air-cushion truck. Instead of rotating through a single loading station as did the 2cm tribarrels on the Slammers' combat cars, each of the calliope's tubes was a separate gun. The array gimballed together to fire on individual targets which the defenders couldn't afford to miss.
Any aircraft, missile, or artillery shell that came over the sector of the horizon which Gun Three scanned—when the weapon was live—would be met by a pulse of high-intensity 3cm bolts from the calliope's eight barrels. Nothing light enough to fly through the air could survive that raking.
A skillful enemy could saturate the gun's defensive screen by launching simultaneous attacks from several directions, but even then the interlocking fire of a full, properly sited six-calliope battery should be able to hold out and keep the target it defended safe.
Of course, proper siting was an ideal rather than a reality, since every irregularity of terrain—or a building like the House of Grace—kept guns from supporting one another as they could do on a perfectly flat surface. Bamberg City wasn't likely to be surrounded by hostile artillery batteries, though, and Charles Desoix was proud of the single-layer coverage he had arranged for the whole populated area.
He did hope his gunners had sense enough not to talk about saturating coverage when they were around civilians. Especially civilians who looked like they'd been born to squatter families on Two.
"Good to see you back, sir," said Blaney, the sergeant in command of Gun Three on this watch.
He was a plump man and soft looking, but he'd reacted well in an emergency on Hager's World, taking manual control of his calliope and using it in direct fire on a party of sappers that had made it through the perimeter Federal forces were trying to hold.
"Say," asked a blond private Desoix couldn't call by name until his eye caught stenciling on the fellow's helmet: Karsov. "Is there any chance we're going to move, sir? Farther away from all this? It gets worse every day."
"What's . . ." Desoix began with a frown, but he turned to view the riot again before he finished the question—and then he didn't have to finish it.