The Coward's Way — Zoe Cannon

Millennia ago, an angelic soldier ran from the horrors of heaven's war against the forces of hell. Now he's living incognito on earth, flipping burgers and keeping his head down.Better a live coward than a dead hero—that's his motto. But when heaven tracks him down and calls him back to the fight, he has to confront a question he's spent thousands of years running from: he may have survived the war, but what is he living for?This short story is 11,000 words long. It is also available in Dark Wings, Bright Flame, an urban fantasy short story collection.