So my eBook loan for this book expired when I was about halfway through it and I was enjoying it so much I bought it so I could finish it. I've heard a lot about this series over the past little while and given how much I have enjoyed Lock In and Redshirts I gave this one a go. Same tone and humour as from the other works but there's also a nice debt to be paid to Robert Heinlein here as well and I loved it. It's a fabulous concept (taking 75 year olds and their experience out into space to fight for the colonies and live out there once their life on Earth as they know it is winding down) and I really enjoyed reading about John Perry's experiences in training and in what action we see him get. He is almost painfully the everyman to the point of absurdity in how well he does in some cases but in a world where the mortality rate is really, really high you can almost deal with the dumb luck that goes his way.
The world and organization is engaging as anything - Starship Trooper without the lectures as one of the reviews in the front says. And it really is a fun and exciting read. I'm on board for more and that's a fact.