German
artillery ranged in calibre from 2 cm to 80 cm. German artillery at the outbreak
of war was standardised e.g. many different gun barrels were interchangeable with
their gun carriages which in itself made manufacture and maintenance far simpler.
Gallery: Sources: German Artillery in World War II. 1939-1945.
ISBN-10: 0887407625
German Artillery of World War Two.
ISBN-10:
1853672610
German infantry weapons of World War II.
ISBN-10: 0882543725
German Small Arms of World War II.
ISBN-10: 0896730239
For
a complete list of
sources 
