Been looking at this a little , the word "Parole"
means secret word or "password". This code word is "Jonguyon" So there you have the daily password. The 24/25.16 are the dates its in effect. The challenge word is "arrest" the reply word is "lokal". And the writing on the box on the wall says "100 guard cartridges". So what you are looking at is a guard house with the password, the challenge and the reply posted. And the "arrest & lokal" actually means to take over control of the bar. What caught my attention is that the writing is in chalk, and not on the photograph as it usually is to denote information about the photograph.
rk
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