Battle Circle

Battle Circle is a trilogy of science fiction novels by Piers Anthony. Originally published separately, the trilogy was later combined into a single volume. The three novels are:

1. Sos the Rope (1968)
2. Var the Stick (1972)
3. Neq the Sword (1975)

The novels take place on a post-apocalyptic Earth. The history is not given in detail, but the landscape is filled with the ruins of the previous civilization, and large areas (referred to as the “badlands”) are still deadly because of radiation, presumably from nuclear war. In North America, there are three main civilizations: the crazies and underworlders, and the nomads who are the main focus of the novels.