What is the significance/symbolism of the photograph of Gregor from his army days?
"On the wall directly opposite hung a photograph of Gregor from his army days, in a lieutenant's uniform, his hand on his sword, a carefree smile on his lips, demanding respect for his bearing and his rank. The door to the foyer was open and since the front door was open too, it was possible to see out onto the landing and the top of the stairs going down."