In US, Reed B Bontecou, a surgeon from New York, started medical photography.
He was also a soldier in the American Civil War.
He took his camera with him to the battlefield.
Besides treating the wounded soldiers, he also clicked their pictures.
He recorded injuries, surgeries, treatments and his working environment.
He played an important role in the identification of a huge number of fatalities of the Civil War.
His images were used to determine post-war pensions, as the officials used the photos to confirm the injuries of the soldiers.