Spies have radio equipment or dead drops, thought Virlomi. But how do you go about becoming a spy when you have no way to reach outside but writing letters, yet there's no one you can write a letter to and no way to say what you need to say without getting caught?

She might have thought of a solution on her own. But Petra simplified the process for her by coming up behind her at the drinking fountain. As Virlomi straightened up from drinking and Petra slipped in to take her place, Petra said, "I am Briseis."

And that was all.

The reference was obvious--everyone in Battle School knew the Iliad. And with Achilles being their overseer at the moment, the Briseis references was obvious. And yet it was not. Briseis had been held by someone else, and Achilles-the original one-had been furious because he felt slighted that he didn't have her. So what could she mean by saying she was Briseis?

It had to do with the letter from Graff and Achilles' warning. So it must be a key, a way to get word out about Petra. And to get word out required the net. So Briseis must mean something to someone out on the net. Perhaps there was some kind of coded electronic dead drop, keyed on the name Briseis. Perhaps Petra had already found someone to contact, but could not do it because she was cut off from the nets.

Virlomi didn't bother doing a general search. If someone out there was looking for Petra, the message would have to be at a site that Petra would be able to find without deviating from legitimate military research. Which meant that Virlomi probably already knew the site where the message was waiting.

The problem she was officially working on at the moment was to determine the most efficient way to minimize risk to supply helicopters while not consuming too much fuel. The problem was so technical that there was no way she could explain doing historical or theoretical research.

But Sayagi, a Battle School graduate five years her senior, was working on problems of pacifying and winning the allegiance of local populations in occupied countries. So Virlomi went to him. "I've gone greeyaz on my algorithms."

"You want my help?" he asked.

"No, no, I just need to set it aside for a couple of hours so I can come back to it fresh. Anything I can help you look for?"

Of course Sayagi had received the same messages as Virlomi, and he was sharp enough not to take Virlomi's offer at face value.

"I don't know, what kind of thing could you do?"

"Any historical research? Or theoretical? On the nets?" She was tipping him to what she needed. And he understood.

"Toguro. I hate that stuff. I need data on failed approaches to pacification and conciliation. Besides killing or deporting everybody and moving in a new population."

"What do you already have?"

"You're wide open, I've been avoiding it."

"Thanks. You want a report or just links?"

"Paste-ups are enough. No links, though. That's too much like doing the work myself."

A perfectly innocent exchange. Virlomi had her cover now.

She went back to her desk and began browsing the historical and theoretical sites. She never actually ran a search on the name "Briseis"-that would be too obvious, the monitoring software would pick that right up and Achilles, if he saw it, would make the connection. Instead, Virlomi browsed through the sites, looking at subject headings.

Briseis showed up on the second site she tried.

It was a posting from someone calling himself Hector Victorious. Hector was not exactly an auspicious name-he was a hero, and the only person who was any kind of match for Achilles, but in the end Hector was killed and Achilles dragged his corpse around the walls of Troy.

Still, the message was clear, if you knew to think of Briseis as a codename for Petra.

Virlomi worked her way through several other postings, pretending to read them while actually composing her reply to Hector Victorious. When she was ready, she went back and typed it in, knowing as she did it that it might well be the cause of her own immediate execution.

I vote for her remaining a resistant slave. Even if she was forced into silence, she would find a way to hold on to her soul. 'As for slipping a message to someone inside Troy, how do you know she didn't? And what good would it have done? It wasn't that long afterward that everyone in Troy was dead. Or didn't you ever hear of the Trojan horse? I know-Briseis should have warned the Trojans to beware of Greeks bearing gifts. Or found a friendly native to do it for her.

She signed it with her own name and email address. After all, this was supposed to be a perfectly innocent posting. Indeed, she worried that it might be too innocent. What if the person who was looking for Petra didn't realize that her references to Briseis resisting and being forced into silence were actually eyewitness reports? Or that the "friendly native" reference was to Virlomi herself?

But her address inside the Indian military network should alert whoever this was to pay special attention.

Now, of course, with the message posted, Virlomi had to continue going through the motions of doing the useless research that Sayagi had "asked" her to do. It would be a couple of tedious hours-wasted time, if no one got the message.

Petra tried not to be obvious about watching what Virlomi was doing. After all, if Virlomi was as smart as she needed to be in order to bring this off, she wouldn't do anything that was worth watching. But Petra saw when Virlomi went over to Sayagi and talked for a while. And Petra noticed that Virlomi seemed to be browsing when she got back to her desk, mousing through online pages instead of writing or calculating. Was she going to spot those HectorVictorious postings?

Either she would or she wouldn't. Petra couldn't allow herself to think about it any more. Because in a way it would be better for everyone if Virlomi simply didn't get it. Who knew how subtle Achilles was? For all Petra knew, those postings might be traps designed to catch her getting someone else to help her. That could be fatal all the way around.

But Achilles couldn't be everywhere. He was bright, he was suspicious, he played a deep game. But he was only one person and he couldn't think of everything. Besides, how important was Petra to him, really? He hadn't even used her campaign strategy. Surely he kept her around as a vanity, nothing more.

The reports coming back from the front were just what one might expect­Burmese resistance was only token, since they were massing their main forces in places where the terrain favored them. Canyons. River crossings.

All futile, of course. No matter where the Burmese made their stand, the Indian Army would simply flow around them. There weren't enough Burmese soldiers to make serious efforts at more than a handful of places, while there were so many Indians that they could press forward at every point, leaving only enough men at the Burmese strong points to keep them pinned down while the bulk of the Indian Army completed the takeover of Burma and moved on toward the mountain passes into Thailand.

That's where the challenge would begin, of course. For Indian supply lines would stretch all the way across Burma by then, and the Thai Air Force was formidable, especially since they had been observed testing a new temporary airfield system that could be built in many cases during the time a bomber was airborne. Not really worth it, bombing airfields when they could be replaced in two or three hours.

So even though the intelligence reports from inside Thailand were very good--detailed, accurate, and recent-on the most important points they didn't matter. There were few meaningful targets, given the strategy the Thai were using.

Petra knew Suriyawong, the Battle School grad who was running strategy and doctrine in Bangkok. He was good. But to Petra it looked a little suspicious that the new Thai strategy began, abruptly, only a few weeks after Petra and Achilles arrived in India from Russia. Suriyawong had already been in place in Bangkok for a year. Why the sudden change? It might be that someone had tipped them off about Achilles' presence in Hyderabad and what that might mean. Or it might be that someone else had joined Suriyawong and influenced his thinking.