From 1897 to 1901 he studied at the Munich Art Academy under Franz von Stuck.
He earned his living making illustrations for the magazine Die 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. In 1913 he became founding president of the artist collective Münchner Neue Secession, with members such as Alexej von Jawlensky, Paul Klee and Alexander Kanoldt.
According to the RKD, he is known today for his cartoons and illustrations as well as his paintings.
Heuss" young face can often be found within Weisgerber"s paintings. He joined the German army in World War I and promoted to the rank of major before being shot and killed on 9 May 1915 after participating in the Battle of Fromelles, west of Rijsel.
In the months before his death, Weisgerber was Officer Commanding the 1st Company of RIR 16 - the List Regiment. Weisgerber was Adolf Hitler"s commanding officer when he died (although Hitler was assigned to Regimental Headquarters at the time of Weisgerber"s death).
Weisgerber was only 37 years old.
His body was initially buried in Fournes, then exhumed and reburied in Nordfriedhof cemetery in Munich.).