The Lost Fleet universe by Jack Campbell :
This is a very big serie with 6 books for the main one and a prequel trilogy, and 3 sequel : one with 5 book available here an the next with 3, and another trilogy. Plus a spinn-off tetralogy for a total of 21 !
Oh and there is a new short stories collection just released too (january 2024)
The explosive first adventure in James Rollins’ bestselling Sigma Force series!
A freak explosion in the British museum in London ignites a perilous race for an earth-shaking power source buried deep beneath the sands of history. Painter Crowe is an agent for Sigma Force, a covert arm of the Defense Department tasked with keeping dangerous scientific discoveries out of enemy hands. When an ancient artifact points the way toward the legendary “Atlantis of the Sands,” Painter must travel across the world in search of the lost city-and a destructive power beyond imagining.
But Painter has competition. A band of ruthless mercenaries, led by a former friend and ally, are also intent on claiming the prize, and they will destroy anyone who gets in their way.
Ancient history collides with cutting-edge science-with the safety of the world at stake!
The Galaxy is a Dumpster Fire.
A hot, stinking, dumpster fire. And most days I don’t know if the legionnaires are putting out the flames, or fanning them into an inferno.
A hostile force ambushes Victory Company during a diplomatic mission. Stranded behind enemy lines, a sergeant must lead a band of survivors against merciless insurgents on a deadly alien world. With no room for error, the Republic’s elite fighting force must struggle to survive under siege while waiting on a rescue that might never come.
There is also a short novel available here
