The Marines in Space series consist of 9 hard science fiction books written by Ian Douglas. Marines in Space, Ian Douglas first wrote Semper Mars: Book One Of The Heritage Trilogy and most recently published Semper Human: Book Three Of The Inheritance Trilogy

• Marines in Space Series Order

We get the question all the time "What order should I read the Marines in Space series?". We would recommend you read the Marines in Space series in order by series number which is:
• 1.   Semper Mars: Book One Of The Heritage Trilogy Book
• 2.   Luna Marine:: Book Two Of The Heritage Trilogy Book
• 3.   Europa Strike: Book Three Of The Heritage Trilogy Book
• 4.   Star Corps Book
• 5.   Battlespace: Book Two Of The Legacy Trilogy Book
• 6.   Star Marines Book
• 7.   Star Strike: Book One Of The Inheritance Trilogy Book
• 8.   Galactic Corps Book
• 9.   Semper Human: Book Three Of The Inheritance Trilogy Book

Other series written by Ian Douglas. Include Star Carrier , Heritage Trilogy , The Legacy Trilogy , Inheritance Trilogy , Star Corpsman