What can you see in the photograph? Ask the pupils to tell you everything that they can see in the photograph e.g. a hat with badge/medallion.
Now encourage them to make inferences about what they’ve spotted e.g. the hat looks official so maybe this person is dressed in uniform. Using these observations and inferences, ask the pupils to explain who they think the woman is and what job she does, when her photograph was taken, and why they think she was photographed.