But the point which most affected Fearless just now was that Hemphill was Janacek’s second cousin and that Janacek personally disliked Admiral Alexander. More, the new First Lord feared the traditionalists’ insistence that aggressive expansion like Haven’s would continue until it was forcibly contained. And, finally, Hemphill was one of the most senior admirals of the red. Each of the RMN’s flag ranks was divided into two divisions on the basis of seniority: the junior half of each rank were admirals of the red, or Gryphon Division, while the senior half were admirals of the green, or Manticore Division. Simple longevity would eventually move any flag officer from one division to the other, but they could also be promoted over the heads of their fellows, and with her cousin as First Lord, Lady Sonja was poised to move up to the green—especially if she could justify her tactical theories. All of which, added together, had given Horrible Hemphill the clout to butcher Honor’s helpless ship.

She growled and kicked a stool across the cabin. The satisfaction was purely momentary, and she flung herself back into her chair to glower at her screen.

Her command, it seemed, was her “reward” for graduating first in Admiral Courvosier’s Advanced Tactics class, for Fearless was also Hemphill’s secret weapon in the upcoming Fleet problem. That explained the security clamped over the refit (which Courvosier had made his excuse for not warning Honor), and she didn’t doubt that Hemphill was chuckling and rubbing her hands in anticipation. For herself, if Honor had known what was waiting, she darn well would have blown off a couple of percentage points just to avoid it!

She rubbed her eyes again, wondering if McKeon already knew about their role in the Fleet problem. Probably not. He hadn’t been upset enough, given what it was going to do to their efficiency ratings and, beyond a doubt, to Fearless’s reputation.

The problem was that, on paper, the whole thing made sense. Gravity sidewalls were the first and primary line of defense for every warship. The impeller drive created a pair of stressed gravity bands above and below a ship—a wedge, open at both ends, though the forward edge was far deeper than the after one—capable in theory of instant acceleration to light speed. Of course, that kind of acceleration would turn any crew to gory goo; even with modern inertial compensators, the best acceleration any warship could pull under impeller was well under six hundred gravities, but it had been a tremendous step forward. And not simply in terms of propulsion; even today no known weapon could penetrate the main drive bands of a military-grade impeller wedge, which meant simply powering its impellers protected a ship against any fire from above or below.

But that had left the sides of the impeller wedge, for they, too, were open—until someone invented the gravity sidewall and extended protection to its flanks. The bow and stern aspects still couldn’t be closed, even by a sidewall, and the most powerful sidewall ever generated was far weaker than a drive band. Sidewalls could be penetrated, particularly by missiles fitted with penetration aids, but it took a powerful energy weapon at very short range (relatively speaking) to pierce them with any effect, and that limited beams to a range of no more than four hundred thousand kilometers.