A herma, commonly herm in English, is a sculpture with a head and perhaps a torso above a plain, usually squared lower section, on which male genitals may also be carved at the appropriate height. Hermae were so called either because the head of Hermes was most common or from their etymological connection with the Greek word ἕρματα, which originally had no reference to Hermes at all. The form originated in ancient Greece, and was adopted by the Romans, and revived at the Renaissance in the form of term figures and atlantes.

The Peloponnesian War was an ancient Greek war fought between Athens and Sparta and their respective allies for the hegemony of the Greek world. The war remained undecided for a long time, until the decisive intervention of the Persian Empire in support of Sparta. Led by Lysander, the Spartan fleet, built with Persian subsidies, finally defeated Athens and started a period of Spartan hegemony over Greece.