I was told about a story, of how one army sent terms to another army threatening 'if' they did not obey them, they would be punished. The receiving army replied to the threat with one word "if". I would really like to know if this story is a real historical event and if so what time period/era.
After invading Greece and receiving the submission of other key city-states, Philip II of Macedon sent a message to Sparta: "If I invade Laconia you will be destroyed, never to rise again." The Spartan ephors replied with a single word: "If" (αἴκα). Subsequently neither Philip II nor his son Alexander the Great attempted to capture the city.