German soldiers negotiating the muddy terrain with their Volkswagen Type 166 Schwimmwagen (amphibious 4-wheel drive) vehicle at an undisclosed location.

Schwimmwagen

German gunboat with 8.8 cm FlaK gun on the Black Sea off Constanta, Romania, Jul 1941, 

German gunboat

German NCO poses with captured Polish TKS tankette, 1939.  This tankette is fitted with the standard armament for the type, a 7.92 Hotchkiss machine gun.  

TK series tankettes formed the bulk of Polish armour in 1939.  Their light armour and machine-gun armament, along with poor deployment, resulted in their suffering substantial casualties.  On the other hand, the fact that the bulk of German tanks at this time were lightly-armoured PzKpfw I and (less numerous, but important) PzKpfw II meant that individual TK tankettes could, with a bit of skill and luck, hurt the panzers.  The very small number of 20mm cannon-armed TKS could certainly present difficulties for a PzKpfw I or II.  For this reason, along with the Polish artillery, the TK tankettes played their part in inflicting the not-insignificant losses suffered by the panzers in the Polish Campaign.

For all its inadequacies as a combat vehicle, an intact TKS tankette like this was a valuable acquisition for the Wehrmacht, in view of Germany's ongoing shortage of motor vehicles.  A substantial number of TK tankettes were captured by the Germans.  These were subsequently used as artillery and general purpose tractors, and in local security duties.  Best regards, JR.