In 1898, he set up his own artists' group, Sturmfackel, with his friend Alfred Kubin. He earned his living making illustrations for the magazine Jugend.
In 1904 he was very active in the Munich café scene, where he met Margaret Pohl, who was also a painter and the daughter of a successful Jewish banker in Prague. They married in 1907.
According to the RKD, he is known today for his cartoons and illustrations as well as his paintings.[1] He was close friends with Theodor Heuss, who later became the first president of the Federal Republic of Germany in 1949. Heuss' young face can often be found within Weisgerber's paintings.
He joined the German army in World War I and was promoted to the rank of major[2] before being shot and killed on 10 May 1915 in the Battle of Fromelles, west of Rijsel. In the months before his death, Weisgerber was Commanding Officer of the 1st Company of RIR 16 - the List Regiment. Technically, therefore, Weisgerber was Adolf Hitler's commanding officer when he died (although Hitler was assigned to Regimental HQ at the time).[2]
Weisgerber was only 37 years old.[1] His body was initially buried in Fournes-en-Weppes, then exhumed and reburied in Nordfriedhof cemetery in Munich.[3]