He died in prison in 1955, after being charged with World War II collaboration, although the specifics remain unclear.

In 1926, Stříbrný was expelled from the Czechoslovak Socialist Party, just a short time after General Radola Gajda was forced to stand down from the military.

Gajda openly admitted to being a supporter of Italian fascism, although some would say he was fired on command of Tomáš Masaryk and Edvard Beneš.

In the 1930s, he worked with Karel Kramář in the National Union (Národní sjednocení), which also included the likes of František Mareš.

At the end of the Second World War, Stříbrný was arrested and charged with collaboration.