On her last cruise, HMS Vanguard - the most powerful battleship in the Royal Navy - barely survived her encounter with a deadly new enemy. Now, with her commanding officer accused of everything from mutiny to dereliction of duty and her crew under a cloud, the Royal Navy doesn't quite know what to do with her. But there's still a war on. And Vanguard must return to the front lines. Assigned to a task force heading to assist humanity's alien allies, Vanguard and her crew find themselves caught in a deadly alien trap.

The first major alien offensive against Earth has been blunted, winning humanity time to deploy new weapons and prepare new tactics as Earth's space navies prepare to take the offensive. But the enigmatic aliens have plans of their own - a full-scale attack on Earth that will either win the war in a single stroke or lose it. The stakes have never been so high. The fate of humanity itself is in the balance.

HMS Vanguard is the most powerful battleship ever to be commissioned by the Royal Navy, but she is not a happy ship. Her commanding officer is eccentric, rarely seen on the bridge; her former XO has deserted his post; and her first middy is resentful because he hasn't been promoted as he deserves.... But when a first contact mission goes badly wrong, HMS Vanguard and her crew are plunged into an interstellar war against a new and deadly alien threat.

The alliance between the Great Powers is starting to fall apart, the human economy cannot keep up with the urgent need for newer and better starships, and politicians are demanding an end to military spending. When a generation starship is detected approaching a British colony world, HMS Invincible is dispatched to intercept the aliens before they can make landfall. But the newcomers bring with them tidings of a new and deadly threat, an expansionist alien race far too close to the Human Sphere for comfort...and a sinister horror beyond human understanding.

A new war has broken out.... Indian ships have invaded three British-held systems, and Indian troops have occupied British colonies, forcing Britain to choose between war and shame. The Royal Navy, battered by the fires of the First Interstellar War and desperately trying to recover from the terrifying casualties, must launch a counterattack and recover the colonies. For HMS Warspite - and a task force of British warships - the stakes have never been so high.

The First Interstellar War is over, but the Royal Navy still has plenty of work to do. As Earth struggles to recover from the bombardment, Captain John Naiser is placed in command of HMS Warspite - an experimental heavy cruiser - and ordered to escort a squadron of colony ships to a star system of immense strategic importance. But as the crew struggle to survive hundreds of light years from Earth, they find themselves dealing with the legacy of the war.

The Royal Navy never expected to fight a full-scale interstellar war. Everyone knew the Great Powers would never risk everything on armed conflict when there was plenty of room for everyone in outer space. But when a hostile alien force stumbles across humanity's handful of colony worlds, the Great Powers must set aside their differences and fight to preserve humanity from utter destruction.

On her last mission, HMS Invincible discovered an alien threat beyond human understanding. Defeat means the end of everything, the end of existence as nothing more than mindless host-bodies, the end of humanity and its alien allies alike. The stakes could not be higher. As a deeply divided humanity struggles to prepare a defense, with enemies inside and outside the human sphere just lurking to strike, Invincible is sent deep into alien space on what should have been a simple reconnaissance mission. 

Humanity is losing the war. The once-mighty space navies have been crippled, officers and crew have been stretched to the limit and Earth herself has come under heavy attack. The end cannot be long delayed. For Admiral Smith and the crew of HMS Ark Royal, the stakes have never been so high. The one hope is to make contact with alien factions that might oppose the war.

The alien virus has begun its offensive, punching through the human defences and sending advance elements to threaten Earth itself. HMS Invincible and her crew, having barely returned from their last mission, are thrown into a desperate mission to strengthen the inner line of defences before the virus can smash them too and destroy the human race. The stakes have never been so high. Defeat means the end of everything.

Seventy years ago, the interstellar supercarrier Ark Royal was the pride of the Royal Navy. But now, her weapons are outdated and her solid-state armour nothing more than a burden on her colossal hull. She floats in permanent orbit near Earth, a dumping ground for the officers and crew the Royal Navy wishes to keep out of the public eye. But when a deadly alien threat appears, the modern starships built by humanity are no match for the powerful alien weapons.

Earth has fallen. The Core Worlds have collapsed into chaos. War is breaking out everywhere as planetary governments declare independence; entire sectors slip out of contact, and warlords battle for power. The remnants of the once-great Empire are tearing themselves apart. In the shadows, the Terran Marine Corps works to save what little they can to preserve civilization and build a better tomorrow. But powerful factions are competing with them, determined to establish their own order.

For small-time street hustler Cam Alvarez, the choice is simple. He has no family, no friends, no place in the world...nothing to lose. When his latest con results in the death of a cartel hitman, Cam opts to join the Marines and leave Earth to fight a vicious alien enemy.

Space isn't so big after all. The Black Sheep are ready for a vacation. Instead, they get sucked into a black hole that spits them out into an uncharted system with a single rogue planet that's inhabited by an AI force that's none too fond of humanity. From there, they find themselves at the front of a deadly military operation to stop the alien threat before it's too late. The battle against planet rogue has arrived.

The mission is simple. Escort an emissary to an intergalactic peace summit. Try not to get in the way. Lt. Magnus and his 79th Recon Team have certainly handled worse, after all. But when an explosion rocks the tower and sends everyone into a panic, Magnus and his asset find themselves cut off from the rest of the team. Worse still, a dying alien chieftain gives them a priceless drive of intel, marking them for death. The mission has officially changed. With enemies on all sides, Magnus must do everything in his power to protect the emissary and escape the tower.