Being the last best hope of humanity was a lousy job.

Sure, the pay was great, but it had to pile up in a bank back on Earth, because there was no place out here to shop.

There was no place to walk. When your official exercise program consisted of having your muscles electrically stimulated while you slept, then getting spun around in a centrifuge so your bones wouldn’t dissolve, there wasn’t much to look forward to in an average day.

To Mazer Rackham, it felt as though he was being punished for having won the last war.

After the defeat of the invading Formics—or “Buggers,” as they were commonly called—the International Fleet learned everything they could from the alien technology. Then, as fast as they could build the newly designed starships, the IF launched them toward the Formic home world, and the other planets that had been identified as Formic colonies.

But they hadn’t sent Mazer out with any of those ships. If they had, then he wouldn’t be completely alone. There’d be other people to talk to—fighter pilots, crew. Primates with faces and hands and voices and smells, was that asking so much?

No, he had a much more important mission. He was supposed to command all the fleets in their attacks on all the Formic worlds. That meant he would need to be back in the Solar system, communicating with all the fleets by ansible.

Great. A cushy desk job. He was old enough to relish that.

Except for one hitch.

Since space travel could only approach but never quite reach three hundred million meters per second, it would take many years for the fleets to reach their target worlds. During those years of waiting back at International Fleet headquarters—IF-COM—Mazer would grow old and frail, physically and mentally.

So to keep him young enough to be useful, they shut him up in a near-lightspeed courier ship and launched him on a completely meaningless outbound journey. At some arbitrary point in space, they decreed, he would decelerate, turn around, and then return to Earth at the same speed, arriving home only a few years before the fleets arrived and all hell broke loose. He would have aged no more than five years during the voyage, even though decades would have passed on Earth.