The Fantasy Review’s list of 6 Amazing Science Fiction Books with a War Setting.
The Forever War (The Forever War, #1) by Joe Haldeman
From the blurb:
The Earth’s leaders have drawn a line in the interstellar sand–despite the fact that the fierce alien enemy they would oppose is inscrutable, unconquerable, and very far away. A reluctant conscript drafted into an elite Military unit, Private William Mandella has been propelled through space and time to fight in the distant thousand-year conflict; to perform his duties and do whatever it takes to survive the ordeal and return home...
First and Only (Gaunt’s Ghosts, #1) by Dan Abnett
From the blurb:
In the Chaos-infested Sabbat Worlds, Imperial Commissar Gaunt must lead his men through as much in-fighting amongst rival regiments as against the forces of Chaos...
Hammer’s Slammers (Hammer’s Slammers, #1) by David Drake
From the blurb:
With a veteran’s eye for the harsh and gritty details of war, David Drake depicts a futuristic analog of tank combat in his Hammer’s Slammers fiction. The Slammers are neither cartoon heroes nor propaganda villains; rather they are competent professionals engaged in a deadly business. The inevitable conflicts between policy, necessity, and human nature make Drake’s Slammers fiction instantly identifiable and utterly compelling...
A Beautiful Friendship (Honorverse: Star Kingdom, #1) by David Weber
From the blurb:
Stephanie Harrington always expected to be a forest ranger on her homeworld of Meyerdahl . . . until her parents relocated to the frontier planet of Sphinx in the far distant Star Kingdom of Manticore. It should have been the perfect new home — a virgin wilderness full of new species of every sort, just waiting to be discovered. But Sphinx is a far more dangerous place than ultra-civilized Meyerdahl, and Stephanie’s explorations come to a sudden halt when her parents lay down the law: no trips into the bush without adult supervision!..
Old Man’s War (Old Man’s War, #1) by John Scalzi
From the blurb:
John Perry did two things on his 75th birthday. First he visited his wife’s grave. Then he joined the army.
The good news is that humanity finally made it into interstellar space. The bad news is that planets fit to live on are scarce―and alien races willing to fight us for them are common. So: we fight. To defend Earth, and to stake our own claim to planetary real estate. Far from Earth, the war has been going on for decades: brutal, bloody, unyielding…
Dauntless (The Lost Fleet, #1) by Jack Campbell
From the blurb:
The Alliance has been fighting the Syndics for a century—and losing badly. Now its fleet is crippled and stranded in enemy territory. Their only hope is a man who’s emerged from a century-long hibernation to find he has been heroically idealized beyond belief….