Across: This famous battle took place in 490 BC, where a small Athenian army defeated a much larger Persian force.

Down: This 5th-century BC battle saw the Carthaginian general Hannibal famously cross the Alps with his army, leading to a stunning victory over the Romans.

Across: This 300 BC battle resulted in the rise of Alexander the Great's Macedonian Empire, marking the beginning of the Hellenistic era.

Down: This 216 BC battle saw the Roman general Scipio Africanus decisively defeat the Carthaginian forces led by Hannibal, ending the Second Punic War.

Across: This 480 BC naval battle marked a turning point in the Greco-Persian Wars, with the Greek fleet led by Themistocles defeating the Persian navy.

Down: This 489 BC battle saw the Persian army led by King Xerxes I attempt to invade Greece through the narrow pass of Thermopylae, famously defended by a small force of Spartan and Thespian soldiers.

Across: This 331 BC battle marked the beginning of Alexander the Great's conquest of the Persian Empire, with his army decisively defeating the Persian forces led by King Darius III.

Down: This 202 BC battle saw the Roman general Scipio Africanus defeat the Carthaginian forces led by Hannibal at the Battle of Zama, effectively ending the Second Punic War.

Across: This 479 BC battle saw the Greek forces led by Pausanias and Aristides defeat the Persian army led by Mardonius, marking the end of the Persian invasion of Greece.

Down: This 218 BC battle marked the beginning of the Second Punic War, with the Carthaginian general Hannibal famously crossing the Alps with his army and defeating the Roman forces led by Scipio Africanus.

Across: This 338 BC battle saw the Macedonian army led by King Philip II decisively defeat the combined forces of Thebes and Athens, establishing Macedonian dominance over Greece.

Down: This 217 BC battle saw the Carthaginian general Hannibal famously defeat the Roman forces led by Flaminius at Lake Trasimene, inflicting heavy casualties on the Romans.

Across: This 405 BC battle saw the Spartan forces led by Lysander decisively defeat the Athenian navy, effectively ending the Peloponnesian War.

Down: This 371 BC battle saw the Theban army led by Epaminondas defeat the Spartan forces led by Cleombrotus I, marking the end of Spartan dominance in Greece.

Across: This 207 BC battle saw the Roman general Scipio Africanus decisively defeat the Carthaginian forces led by Hannibal at Zama, effectively ending the Second Punic War.