William T Fitzsimons

Lieutenant William T. Fitzsimons (1889—1917) was a United States Army officer in World War I, and is considered the first American officer killed in the war. Fitzsimmons graduated from the University of Kansas School of Medicine in 1912.

Fitzsimons was killed in a German air raid on September 4, 1917 along with Pvt. Oscar Tugo, Pvt. Rudolph Rubino and Pvt. Leslie Woods, when bombs fell on Base Hospital No. 5 near Dannes-Camiers in Pas-de-Calais, France.

In 1920, Army Hospital 21 in Aurora, Colorado was officially renamed the Fitzsimons Army Hospital in his honor.