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Military Sci-Fi
Starship TroopersStarship Troopers by Robert A. Heinlein
Buy new: £6.99 / Used from: £3.99
Absolutely amazing book, and far superior to the film, featuring life in the Mobile Infantry.
Ender's Game (The Ender saga)Ender's Game (The Ender saga) by Orson Scott Card
Buy new: £5.49 / Used from: £1.45
The first in a series but a great stand-alone story about a boy recruited to fight an alien fleet.
Worldwar: In the Balance (New English library)Worldwar: In the Balance (New English library) by Harry Turtledove
Buy new: £5.99 / Used from: £0.01
Part alternative history, part sci-fi and part war story. Aliens invade Earth during WWII. First in a series of four books, with additional spin-off novels.
Old Man's WarOld Man's War by John Scalzi
Buy new: £2.26 / Used from: £2.25
The Colonial Defence Force only recruits 75-year-olds to fight and earn a chance at another lifetime.
The Ghost BrigadesThe Ghost Brigades by John Scalzi
Buy new: £2.02 / Used from: £1.68
Set after 'Old Man's War' but only loosely connected, featuring the special forces. Just as well written.
The Forever War (S.F. Masterworks)The Forever War (S.F. Masterworks) by Joe Haldeman
Buy new: £2.35 / Used from: £0.94
Life in the infantry from boot camp to battle. The effects of relativistic starship travel cause long periods to pass on earth while the hero is away at war.
Forever Peace (Remembering Tomorrow)Forever Peace (Remembering Tomorrow) by Joe Haldeman
Buy used from: £0.33
Not a sequel as such, but a good story about a one-sided war in the near future featuring remotely controlled warrior robots.
First and Only (Warhammer 40,000: Gaunt's Ghosts)First and Only (Warhammer 40,000: Gaunt's Ghosts) by Dan Abnett
Buy new: £5.99 / Used from: £2.00
First in a series of several books. It helps if you know the Warhammer 40,000 universe, but solid military sci-fi anyway.
Legion of the DamnedLegion of the Damned by William C. Dietz
Buy new: £4.99 / Used from: £0.95
The French Foreign Legion in the far future, incorporating human and cyborg soldiers.
Final BattleFinal Battle by William C. Dietz
Buy new: £2.10 / Used from: £1.96
Sequel to 'Legion of the Damned'. Carries on the story well with a few new ideas and familiar characters.
OrphanageOrphanage by Robert Buettner
Buy used from: £1.46
A poor man's 'Starship Troopers', but pretty good in its own right.
Orphan's DestinyOrphan's Destiny by Robert Buettner
Buy used from: £0.01
A nice sequel following directly from 'Orphanage' featuring many of the same characters.
ArmorArmor by John Steakley
Buy new: £2.06 / Used from: £0.33
Brilliant account of soldier in exo-armour fighting insect-like aliens and surviving against the odds.
Their Master's WarTheir Master's War by Mick Farren
Buy used from: £14.35
A decent story with some interesting elements and good action scenes.