The first 10 Panzerkampfwagen III Ausf A were*
produced in May of 1937. Some sources state *
as many as 15. Only 8 of Ausf As were armed.*
They equipped units of 1st, 2nd and 3rd Panzer*
Division, and took part in Anschluss, take-over*
of Sudetenland and the Polish Campaign. Other*
unarmed III As were used for further testing.* 
*
Later in 1937, 15 Ausf B were produced. They*
saw service during the Polish Campaign. In*
October of 1940, five Ausf B tanks were*
modified and used as prototypes of StuG III series.*

Also in 1937, 15 Ausf C were produced. They saw*
service during the Polish Campaign.*
*
In 1938, 55 Ausf D were produced. Only 30 Ausf Ds,*
in 2 groups of 15, were armed. The other 25*
unarmed Ausf Ds were used for testing. The armed*
ones saw service during the Polish Campaign and*
in Norway.*
*
