Nuclear war is both a fascinating and a terrifying topic for literature. One of the most famous, and affecting, pieces of literature ever written about the aftermath of a nuclear war is "On the Beach" by Nevil Shute. The terror and hopelessness the citizens of Australia feel as the deadly radioactive cloud slowly and inevitably moves towards their continent is palpable and harrowing to read. During the same period that Shute wrote "On the Beach", another noted author, Mordecai Roshwald, wrote an equally compelling novel about the preparations and aftermath of nuclear war, called "Level 7".
"Level 7" is a reference to the deepest level of underground shelters that humanity will be sequestered in should this horrible kind of war come to pass. The perceived importance of the people housed in the respective levels increases with each successive level. Level 1 is simply ordinary citizens who will receive minimal shielding from the bombs. Level 5 has the government and military planners, while Level 6 houses the soldiers who will be in charge of defensive countermeasures during the war, and Level 7 houses those whose horrific (and one-time) task will be to fire the offensive nuclear missiles at the enemy. Level 7 is several thousand feet underground. It is seemingly impervious to the effects of a nuclear attack and is a self-sufficient living environment designed to sustain the survivors (and their offspring) until such time as the surface becomes safe to return to. Those selected for the Level 7 assignment have passed a rigorous set of psychological tests that require said soldiers to not be afraid of firing missiles that can end mankind, to not be concerned with being cut off from humanity, and to be prepared to do what is necessary to ensure humanity's survival.
The story of "Level 7" is told in journal form from the perspective of one of the soldiers tasked with firing those awful weapons. He is only referred to by his operating number and his view of events is, to say the least, unique. He doesn't seem to be particularly bothered by his assignment to Level 7. His description of entering the level through one-way doors through which there is no return is so calm and disaffected that the prospect of such a terminable existence seems even more terrifying to the reader than if he was panicky. When the time for the war comes, he doesn't seem particularly bothered about the fact that he has to push one button to launch several offensive weapons and then his usefulness is complete (save for perpetuating the species). He views with pity the fate of one of his fellow soldiers who goes absolutely insane when faced with the prospect of having to fire the missiles that may wipe out humanity. In relatively short order, the war begins and in ends. All that is left is to assess the damage to wait for the day when it is safe to return.
Alas, even the best laid plans like this multi-tiered shelter fall victim to the merciless tendencies of war and nature. The top most levels are either wiped out instantly during the attacks or poisoned almost immediately by radiation. While the former warring countries come to terms of peace (via radio, obviously), the effects of the war continue to wipe out one level after another. The horrifying realization begins to settle in that no one will survive this war. Much like "On the Beach", "Level 7" leaves to reader with the sad image that after death, there will be no more life.