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Symmachia (alliance)
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This article is about a Greek military alliance. For the federation of communities into a polis, see Synoecism. For the confederation of multiple independent communities in a single politeia, see sympoliteia. For the municipal unit in modern Greece, see Sympoliteia (municipality). For the genus of butterflies, see Symmachia.
A symmachia (Greek: συμμαχία, romanized: symmachia) is and was in ancient times a military treaty between independent polities covering both offense and defense. In modern Greek the word also can mean an alliance among political factions to form a political party.
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