Marwitz, the male lover of his brother Heinrich. Many documents and letters have been preserved, but not all of them have been researched. In order to be able to say with certainty whether Friedrich was gay, [...] men” is missing. It does not currently exist. Perhaps he never made a written statement about it, or all the documents were burned or hidden. Accordingly, everything remains mere speculation. In addition [...] heterosexual, pansexual, or whether his sexuality was perhaps even fluid, cannot be proven. After all, there were no such definitions at the time and Frederick did not like labels: he neither confirmed