Memnon of Rhodes (380 – 333 BC) was the commander of the Greek mercenaries in the service of the Persian king Darius III when Alexander the Great of Macedonia invaded Persia in 334 BC. Memnon famously advocated a scorched earth policy against Alexander, aware of the Macedonian's lack of supplies and funds. He commanded the mercenaries at the Battle of the Granicus River, where his troops were massacred by the victorious Macedonians.