<a href="https://en.wikipedia.org/wiki/Kazimierz_Bartel" class="extiw" title="en:Kazimierz Bartel">Kazimierz Bartel</a> (1882-1941) – Polish  mathematician, scholar, diplomat and politician who served as 15th, 17th and 19th Prime Minister of Poland three times between 1926 and 1930 and the Senator of Poland from 1937 until the outbreak of World War II. Here in Austro-Hungarian army uniform.
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<a href="https://pl.wikipedia.org/wiki/Centralne_Archiwum_Wojskowe" class="extiw" title="pl:Centralne Archiwum Wojskowe">Centralne Archiwum Wojskowe</a>