Humans expanded into space, discovering multiple alien species. But these were enemies not allies, their forces were bent on our destruction. Thus was the Colonial Union formed, to protect us from a hostile universe. And Earth's excess population became its colonists and soldiers. It was a good arrangement - for the Colonial Union. Then the Earth said no more.
Now the Colonial Union is living on borrowed time before its defence forces are fatally depleted. Then struggling human colonies will be vulnerable, easy prey for alien species eager for humanity's ruin. And there's another problem. A group lurks in the darkness of space, playing human and alien factions against one another. They'll even target their own kind and their reasons are unfathomable.
In this collapsing universe, Lieutenant Harry Wilson and Colonial Union diplomats race to discover who's behind these attacks. They must also seek peace with an angry Earth, and keep humanity's union intact. The alternatives are oblivion, extinction - and the end of all things.
PRAISE FOR THE OLD MAN'S WAR SERIES
"Clever dialogue, fast-paced story and strong characters." The Times
"Great fun" Daily Telegraph
Great, but flawed
This book explores much more interesting ideas than 5, but suffers from a lot of the same problems (such as the ‘genre shift’ away from pure sci-fi), and one new one which is that it ends the ‘Old Mans War’ series, and a little disappointingly too.
While part of the story centres around an idea that’s just as interesting as the crowded universe and body swapping ideas, and is explored much more deliberately, because the book has been split up for publishing purposes, only a couple of the sections are able to talk about it in depth, and the other sections are sadly low on cool new concepts.
If you have read all the other books including 5, then you should probably read this one as well, but be warned that it can take some of the magic out of the series.
Mild SPOILER ALERT
I think if the series had ended tragically, with humanity becoming extinct either because of the fascistic, treacherous government, or because it couldn’t commit to it, the overarching story would have been much stronger and more thought provoking than with the ‘happily ever after’ ending it was given, but I understand the difficulties of that path.