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. 

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.

The Commonwealth has fractured, its interstellar order breaking down into civil war. On one side is Hadrian, the outlaw king of Tyre, driven from his homeworld and forced into a fragile alliance with the colony worlds; on the other sits a parliament determined to restrain him at all costs. The time for talk is over. The matter can be settled only by war. Loyal to the king, Admiral Kat Falcone leads her fleets into battle, joined by allies with motives of their own. But her friend and former comrade Commodore William McElney has chosen to join the Houses of Parliament.

The Second Interstellar War - pitting humans and their Tadpole allies against an enigmatic alien empire - appears to have stalemated. Neither side can push through to the other's core systems without risking substantial losses, neither side can gain a decisive advantage. But when a brilliant human scientist invents a way to jump across the stars without a gravity tramline, an opportunity arises to strike the enemy in their undefended rear. It is an opportunity that cannot be allowed to pass.

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.

A year ago, the war against the Theocracy ended. But it didn't bring peace. Admiral Kat Falcone was lucky - her side won the war. But without an external threat, Kat’s homeworld government, the Commonwealth, begins to burst. The galactic war may be over, but there is a civil war on the horizon. The king and parliament disagree over the Commonwealth's future. The Commonwealth's first recession is plaguing corporations. 

Seeking to escape the shadow of Annette Bond’s success, Captain Morgan Casimir has taken a posting on the far side of the A!Tol Imperium. Here she hopes to begin a legend for herself that stands apart from her stepmother, the Duchess. A chance encounter introduces her to the xenoarchaeologist Rin Dunst - and to the strange mystery cult that tried to silence him. There are darker secrets in these stars than the A!Tol and their human allies ever guessed...and if they can’t find answers, the Precursors' mistakes might yet destroy the galaxy. Again.

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.

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.

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 Tokomak, the unquestioned masters of the galaxy, have dispatched a massive fleet to crush the Solar Union - and the fledgling Galactic Alliance - before the human race and its alien allies can tear the galactic order asunder. Hundreds of thousands of starships under the command of an alien tactical genius, bent on exterminating the entire human race...the darkest hour is truly at hand. 

In the wake of Earth's collapse into chaos, Captain Hoshiko Stuart made the mistake of speaking her mind - and was exiled six months from Sol to a naval base in an unexplored and uncontacted sector. Placed in command of a single squadron of starships, she expected nothing but boredom. But when she discovers an alien race threatening to exterminate all other races within the sector, Hoshiko and her squadron are drawn into a war to stop them.

Earth has fallen. The Empire is no more. Old certainties are collapsing everywhere. Chaos is spreading across the stars, with war following in its wake. Tarsus, a world too close to Earth for comfort, is far from immune. Clarence Esperanza, a reporter on Tarsus, thought he had the story of the century. But, when he took the story to his bosses, he was unceremoniously fired. Cut off from his former friends, abandoned by his wife isolated from the world around him, he thought all he could do was stagger onto the streets and wait to die. 

In the wake of the Solar Union’s stunning victory over the Tokomak - the masters of the galactic community - humanity has been invited to send a diplomatic mission to the Kingdom of Harmonious Order, one of the oldest and most significant races in known space. It is an opportunity that cannot be missed, a chance to forge ties with a powerful ally. And so a lone starship is dispatched to the galactic core to open discussions. But when that starship runs into a deadly trap, she and her crew must battle their way home before they are merely the first casualties in a renewed war. 

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.