[1] Klepp attended the Theresian Military Academy and joined the Austro-Hungarian army on 18 August 1910.
After the end of World War I, he served in the Land Command of Styria, the Graz army administrative office and the 10th Alpenjäger Regiment.
In April 1942, he was promoted to major general and appointed commander of the 370th Infantry Division which he led in the Battle of the Caucasus.
[1][3] After Germany surrendered in May 1945, Klepp was captured, held on Island Farm and released in 1947.
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