First World War Army jacket belonging to Lieutenant Sydney Matthew Callaghan (1892-1976), who served in the Australian Engineers, AIF Canteens Section and the Australian Flying Corps during WWI. Sydney and his family lived at 34 Normanby Street from 1932. His parents lived in Bay Road, Sandringham.First World War Army jacket, khaki with four front pockets. Winged Australian Flying Corps patch above left breast pocket. Lieutenant's insignia on epaulets: two diamond-shaped metal 'pips' and a curving band with the word "AUSTRALIA". Flying Corps colour patch on each shoulder: a pale blue triangle with two small red stripes and a large central darker blue stripe. Metal belt hooks on either side of the waist. The garment has been widened, with a strip of khaki fabric inserted in the centre back.sydney matthew callaghan, australian flying corps, military uniform, first world war