The Ghost Brigades by John Scalzi Page B

soldiers’ disorientation at being activated fully conscious but without any memory to speak of. This time, there was just one soldier: The one who would house Charles Boutin’s consciousness.
    Â 
    It had been more than two centuries since the nascent Colonial Union, faced with its spectacular failure to defend the earliest of its colonies (the planet Phoenix was called so for a reason), realized that unmodified human soldiers were unable to get the job done. The spirit was willing—human history recorded some of its greatest doomed battles in those years, with the Battle for Armstrong in particular studied as a masterful example of how to turn an imminent rout by alien forces into a shocking and painful Pyrrhic victory for one’s enemy—but the flesh was all too weak. The enemy, all of the enemies, were too fast, too vicious, too pitiless and too many. Human technology was good, and weapon to weapon humans were as well-equipped as the vast majority of their adversaries. But the weapon that ultimately matters is the one behind the trigger.
    The earliest modifications were relatively simple: increased speed, muscle mass and strength, endurance. Early genetic engineers, however, were hampered by the practical and ethical problems of engineering humans in vitro, and then waiting for them to grow sufficiently large and smart enough to fight, a process that took roughly eighteen years. The Colonial Defense Forces discovered to its intense chagrin that many of its (relatively) lightly genetically-modified humans were not particularly pleased to discover they were raised as a crop of cannon fodder and refused to fight, despite the best indoctrination and propaganda efforts to persuade them otherwise. Unmodified humans were equally scandalized, as the effort smacked of yet another eugenics effort on the part of a human government, and the track record of eugenics-loving governments in the human experience was not exactly stellar.
    The Colonial Union survived the wracking waves of political crises that followed in the wake of its earliest attempts to genetically engineer its soldiers, but just barely. Had the Battle for Armstrong not emphatically shown the colonies what sort of universe they were up against, the Union would likely have collapsed and the human colonies would have been left in the position of competing against each other as well as against every other intelligent species they had encountered to date.
    The Union was also saved by the near-simultaneous arrival of dual, critical technological discoveries: the ability to force-grow a human body to adult size in months, and the emergence of the consciousness transfer protocol that allowed the personality and memories of one individual to be transported into another brain, provided that brain had the same genetics, and had been adequately prepared with a series of pre-transfer procedures that developed some of the necessary bioelectrical pathways in the brain. These new technologies allowed the Colonial Union to develop a large, alternate pool of potential recruits: The elderly, many of whom would readily accept a life in the military rather than die of old age, and whose deaths, in any event, would not create the multi-generational demographic damage that ensued when large numbers of healthy young adults were blown out of the gene pool at the end of an alien’s weapon.
    Presented with this bountiful new pool of potential recruits, the Colonial Defense Forces found it had the luxury of making certain staffing choices. The CDF would no longer ask colonists to serve in the CDF; this had the salutary effect of allowing colonists to focus on developing their new worlds and making as many second-generation colonists as their planets could handle. It also eliminated a key source of political tension between the colonists and their government. Now that the young adults of the colonies were no longer extracted from their homes and families to die on