The US Civil War was primarily "river battles", the famed Monitor vs the Merrimack being the most noted. US Navy riverine boats also fought in the rivers during the Vietnam War. Both the Civil War & Vietnam War used "River Monitors."
Marathon is an ancient Greek city-state, a contemporary town in Greece, the site of the battle of Marathon in 490 BC, in which the heavily outnumbered Athenian army defeated the Persians.