Craig Alanson books in order
6 books in the catalogue, about 28 hours of reading in all; the shortest takes 2 hours and the longest 6 hours.
1 series in the catalogue.
Expeditionary Force
10 books 1 
Columbus Day 5.6 h 2 
SpecOps 5.1 h 3 
Paradise 5.2 h 3.5 
Trouble on Paradise 1.8 h 4 
Black Ops 5.1 h 
Mavericks 5.3 h
Columbus Day 5.6 h 2 SpecOps 5.1 h 3 Paradise 5.2 h 3.5 Trouble on Paradise 1.8 h 4 Black Ops 5.1 h 5 Zero Hour length not known
6 Mavericks 5.3 h 7 Renegades length not known
7.6 Deathtrap length not known
8.5 Freefall length not known