John Ringo books in order
25 books in the catalogue, about 220 hours of reading in all; the shortest takes 5 hours and the longest 13 hours.
2 series and 14 standalone books in the catalogue.
Legacy of the Aldenata
7 books
A Hymn Before Battle 8.7 h 
Gust Front 11.0 h 
When the Devil Dances 12.9 h 
Hell's Faire 5.7 h 
Watch on the Rhine 9.1 h The Tuloriad length not known
Yellow Eyes 11.4 h Empire of Man
4 books
Standalone books
March to the Stars 9.7 h 
The Service of the Sword 9.0 h 
Ghost 7.4 h 
We Few 7.2 h 
Choosers of the Slain 8.2 h 
Kildar 7.2 h 
A Deeper Blue 10.3 h 
Vorpal Blade 7.6 h 
Citizens 5.3 h Tiger by the Tail 6.9 h 
Under a Graveyard Sky 6.7 h 
Islands of Rage & Hope 7.4 h 
To Sail a Darkling Sea 6.9 h 
Black Tide Rising 5.6 h Collected editions
Volumes that gather several of the books above.
