This lesson is designed to help emphasise the difference between the instructions 'identify', 'describe' and 'explain'. It is also good practice of thinking critically about primary sources. It is set in the Crimean War and touches on the Charge of the Light Brigade. Students analyse two photos to try and decide which came first then listen to the RadioLab podcast to hear how a Historian went through the process of trying to figure it out. This could also be useful for Media lessons looking at photos staged for effect.