Young man in uniform
He is dashing but not identified. There is no way for us today to know who he is, now that everyone is dead. He bears a family resemblance to the father, so this could indeed be the son, Louise’s brother. Who knows: a lot of the men pictured in the record look like kin. The young man could also be Louise’s cousin Camille, the one who became her beloved. He might have sent her this photograph of himself from the front lines as a token of his romantic love, like the flowery lacy postcard and like the bullet pencil case. There is no way to know.