Alas, Babylon, by Pat Frank

When Randy Bragg receives a telegram from his older brother ending with the words "Alas, Babylon," he knows disaster is near. The two words were Randy and Mark's code for impending disaster. In this case, Mark, an Air Force Intelligence officer, wants to meet up to explain his fears that World War III is imminent.

Alas, Babylon, by Pat Frank (pen name of Harry Hart Frank), one of the "first apocalyptic novels of the nuclear age" describes life in the fictional town of Fort Repose, Florida immediately following a full-scale nuclear strike on the United States. The people in Fort Repose must learn to come to grips with their new reality: store shelves that are soon empty, no gas for the cars, meds for diabetes (and later, typhoid fever), and a government breakdown, where each person, each town is an island.

A year after the devastation, the residents of River Road in Fort Repose are visited an Air Force helicopter, carrying family friend Paul Hart - now a colonel - along with his crew, bringing news from the outside. As Paul gets ready to leave, Randy asks the question on everyone's mind: "'Paul, there's one thing more. Who won the war?'

"Paul put his fists on his hips and his eyes narrowed. 'You're kidding! You mean you really don't know?...We won it. We really clobbered 'em!' Hear's eyes covered and his arms drooped. He said, 'Not that it matters.'

"The engine started and Randy turned away to face the thousand-year night."

Although Alas, Babylon was published in 1959, it is still every bit as relevant as it was when it was published, and well worth the read.