PVT William Mirs Jr. was born 1912 in Elk Grove, Illinois. He was the youngest of 3 children born to William and Emma (Stadt) Mirs. His father was a native of Germany. His mother died in April 1913. His father married Rose Muth in March 1917 and the couple had a daughter the following year. His father farmed. In 1940, William was working as a roofer and reported a 1939 income of $900. He still lived with his father. Young William married divorcee Ruth Alice Sharick on 4 Sep 1943.
William's marriage likely took place just prior to his being drafted. After his initial training he was sent to Europe and assigned to B Company 116th Infantry. He fought with the unit until wounded on 26 Aug 1944 and evacuated to hospital. PVT Mirs died of his wound(s) on 5 Sep 1944.
PVT Mirs is buried in the Brittany American Cemetery.
Older brother, Alfred Augustus Mirs, served in the U.S. Army Air Corp and Air Force 1942-1962.