Archduke_Joseph_Ferdinand_of_Austria--Emperor_of_Austria_Charles_I

Archduke Joseph Ferdinand of Austria, full name Joseph Ferdinand Salvator Maria Franz Leopold Anton Albert Johann Baptist Karl Ludwig Rupert Maria Auxilatrix; 24 May 1872 – 28 August 1942, was an Austro-Hungarian Archduke, military commander, from 1916 Generaloberst, and early advocate of air power. He later retired to live as a common citizen of Austria, and was briefly imprisoned in Dachau during the Nazi era.