Elliot Ackerman, a Marine veteran and prolific author, switched gears with “Sheepdogs,” a caper story featuring down-on-their-luck ex-military buddies. “I saw a lot, some of it good and some of it ...

What are we most concerned about when it comes to the U.S. military? How have those concerns shifted in the past decade? You can glimpse an answer to those questions by looking at the novels of Elliot ...