Battle of Čokešina

The Battle of Čokešina, also referred to as the "Serbian Thermopylae", was a battle fought on Lazar's Saturday, 28 April 1804, between the Serbian insurgent army under the command of the Nedić brothers and forces of the Ottoman Empire. It took place near the Monastery of Čokešina, not far from Loznica. The battle is known as the Serbian Thermopylae because the Serbian army numbered 303 hajduks were outnumbered fifteen to one, according to historians. The small Serbian force were eventually defeated after a day of fierce fighting; the death of all the insurgents resulted from the battle. Its aim of preventing the siege of the Ottomans at

Šabac being broken by relieving Bosnian–Ottoman troops was nevertheless achieved.

Source: Wikipedia