Lanz entered the Army on 20 June 1914, shortly before the outbreak of World War I and served in the Western Front, and ended it with the rank of lieutenant ("Oberleutnant").
Lanz entered the Army on 20 June 1914. This was shortly before the outbreak of World War I. Lanz served in the Western Front. Lanz ended it with the rank of lieutenant ("Oberleutnant").