Frontlines Series in Order by Marko Kloos

Centers of Gravity is the eighth and final book in Marko Kloos' Military Science Fiction series "Frontlines". The book follows Major Andrew Grayson and his crew as they are stranded light-years from home and on a desperate mission to discover the Lankies' secrets. The Lankies are an alien species that humanity is fighting against in their first war. The book is a well-written and fast-paced military science fiction novel that features a life and death struggle, impossible odds, amazing discoveries, great characters, vividly imagined new worlds, and more. Although the book can be read as a standalone, it is recommended to start with the first book in the series, "Terms of Enlistment," to fully understand the characters and their backgrounds. Overall, Centers of Gravity is a highly enjoyable and satisfying conclusion to the "Frontlines" series.

"Orders of Battle" is the seventh book in the "Frontlines" series by Marko Kloos, published in 2020. The book takes place six months after the events of the sixth book, where the battle against the Lankies has been won and Earth seems safe. However, the military is still on high alert, and the story follows the protagonist, Andrew Grayson, as he navigates the challenges of peacetime military life. The book combines action with character development, as the battle developments and protagonists' emotions develop realistically and meaningfully. While "Orders of Battle" does not tell the complete story of the newest chapter in the human/Lankie conflict, it sets up another book in the series.

"Points of Impact" is the sixth book in the "Frontlines" series by Marko Kloos. The series is a military science fiction that follows the story of humanity's struggle against alien invaders. In "Points of Impact," Earth is trying to stand on equal footing against the alien invaders by developing a new armored battle cruiser designed to take out Lanky seed ships with ease. The book revolves around the development of this new ship and the challenges that come with it. The story is action-packed and intense, with Kloos doing a fine job of world-building and setting description. The book is the last in the series for the short-term future, as Kloos is taking a break to launch a different series.

"Fields of Fire" is the fifth book in the "Frontlines" series by Marko Kloos. The book continues the story of humanity's fight against the Lankies, an alien race that has taken control of Mars. The depleted forces of Earth are preparing a counter-assault to take back the planet. The story features powered armor, nuclear warfare, and grand theft auto, and is set in space. The book is a thrilling tale of battle and survival, with a focus on the human spirit and the will to fight against all odds. The story is well-written and engaging, with a strong plot and well-developed characters. It is a must-read for fans of military science fiction and those who enjoy action-packed stories set in space.

"Alien Wars - Operation Mars" is a novel written by Marko Kloos and translated by Martin Gilbert. It is part of the "Alien Wars" book series, which is a science fiction series written by Kloos. The book was published by Wilhelm Heyne Verlag in 2017 and has an ISBN of 3453317920 and 9783453317925. The plot of "Alien Wars - Operation Mars" revolves around a group of soldiers who are sent to Mars to investigate a distress signal. However, they soon find themselves in the middle of a battle between two alien races, and must fight to survive and protect Earth from the alien threat. The book is a fast-paced, action-packed science fiction adventure that explores themes of war, survival, and humanity's place in the universe.

I was unable to find any information about a book called "Sonnenschlacht" by Marko Kloos and Martin Gilbert. However, I can provide some information about the authors and their work. Marko Kloos is primarily a science fiction and fantasy author, known for his "Frontlines" series. Martin Gilbert is a historian and author, known for his works on World War II and Jewish history. Without more information about "Sonnenschlacht," it is difficult to provide a detailed description of the book plot.

"Chains of Command" is the fourth book in the Frontlines series by Marko Kloos. The book follows the story of Andrew Grayson, who is asked to join a high-stakes, high-risk mission to help retake Mars from the Lankies, an alien race that has taken over the planet. Assigned to a small special ops recon mission to scout out the renegades' stronghold on a distant moon, Grayson and his wife, dropship pilot Halley, again find themselves in the midst of a dangerous situation. The book is a military science fiction novel that explores themes of loyalty, sacrifice, and the human cost of war. It has received positive reviews for its action-packed plot, well-developed characters, and realistic portrayal of military life.

"Alien Wars - Planetenjagd" is the fourth book in the "Alien Wars" series written by Marko Kloos and Martin Gilbert. The series is primarily science fiction and fantasy, with a focus on military science fiction. In "Alien Wars - Planetenjagd," the story follows a group of soldiers as they fight against an alien race that has invaded Earth. The soldiers must navigate dangerous terrain and battle against overwhelming odds to protect their planet and their people. The book is action-packed and full of suspense, with a strong emphasis on character development and world-building. Overall, "Alien Wars - Planetenjagd" is a thrilling addition to the "Alien Wars" series, and a must-read for fans of military science fiction.

"Alien Wars - Invasion der Sterne" is a science fiction book written by Marko Kloos and translated by Martin Gilbert. The book is part of the "Alien Wars" series and was published in German in 2017 by Wilhelm Heyne Verlag. The book is about an alien invasion of Earth and the struggle of humanity to survive against the technologically advanced alien forces. The plot follows a group of soldiers who are sent on a mission to Mars to gather intelligence on the alien forces and find a way to defeat them. The book is action-packed and full of suspense as the soldiers face danger and uncertainty at every turn. The book is written in German and is available in ebook and print formats.

"Angles of Attack" is the third book in the "Frontlines" series by Marko Kloos. It was published in April 2015 and has 338 pages. The book follows the story of Andrew Grayson, a soldier in the North American Commonwealth's military, as he fights against the alien Lankies. In "Angles of Attack," Grayson and his fellow soldiers are sent to defend a colony on a distant planet from a Lanky attack. The book is filled with action and suspense as the soldiers fight to protect the colony and survive against the powerful Lankies. The "Frontlines" series is known for its authentic portrayal of military culture and its ability to capture the essence of warfare.

"Lines of Departure" is the second book in the "Frontlines" series by Marko Kloos, which is a military science fiction series that follows the story of Grayson, who grew up in a dangerous welfare tenement in future Boston, and his journey through the military. The book is set in a future where humanity is fighting a vicious interstellar conflict with an indestructible alien species, known as the Lankies, and a bloody civil war over the last habitable zones of the cosmos. In "Lines of Departure," Grayson is promoted to a new role as a fleet sergeant, and he must lead a group of soldiers to defend Earth against the Lankies. The book explores themes of leadership, sacrifice, and the horrors of war, and it has been praised for its authentic portrayal of military culture.

"Measures of Absolution" is a novella by Marko Kloos that is part of the "Frontlines" series. The book focuses on Corporal Jackson, one of Grayson's squad mates, as she tries to figure out what happened after the Battle of Detroit. In the aftermath of the battle, Jackson learns how the 365th AIB got a mauling in the Public Residence Clusters. The book is set in a future where current trends in the United States lead to a future of bleakness and terror. The novella is a work of military science fiction that explores the aftermath of a battle and the struggles of a soldier trying to make sense of what happened.

"Lucky Thirteen" is a short story written by Marko Kloos and is part of the "Frontlines" book series. The story follows Lt. Halley, a rookie pilot, as she takes command of an old and outdated drop ship named Lucky 13. Despite its age, Lucky 13 proves to be a remarkable and resilient ship, saving its pilot, crew, and wounded soldiers. The story explores the bond between a pilot and their ship, showcasing the bravery and determination of both Halley and Lucky 13. In this short story, readers get a glimpse into the world of the "Frontlines" series, which is set in a future where humanity is engaged in a war against an alien species. The series follows the experiences of soldiers and pilots as they navigate the dangers of interstellar conflict. "Lucky Thirteen" offers a standalone story within this universe, focusing on the unique relationship between a pilot and her ship. Overall, "Lucky Thirteen" is a heartfelt and engaging short story that provides a captivating glimpse into the "Frontlines" series and explores the courage and resilience of its characters.

"Terms of Enlistment" is the first book in the "Frontlines" series by Marko Kloos. The story follows Andrew Grayson, a new recruit who joins the military to escape poverty and a dead-end future. He goes through basic training and is eventually deployed to fight in an urban military battle against a mob. The book explores themes of class, poverty, and the military-industrial complex. It is a military science fiction novel that has been praised for its realistic portrayal of military life and its engaging plot. The book has been described as a solid addition to the military sci-fi genre and has received positive reviews from readers and critics alike.

"Chains of Command" is a novel by Graham McNeill that is part of the Warhammer 40,000 universe. The book follows the Ultramarines, a chapter of Space Marines, as they fight against the forces of Chaos. The story takes place on the world of Pavonis, where the Ultramarines are sent to investigate a civil disorder and renegade Eldar activity. The Ultramarines soon find themselves in the middle of a complex web of political intrigue and betrayal, and must fight to uncover the truth and protect the Imperium. The book is known for its well-described and gruesome battle scenes, as well as the development of intriguing characters.