German soldiers taking part in an improvised chariot race.
No idea about the location, year or any other details.

Swastika Racing

Original caption: "10 years German Reichswehr!

The weapons of our Reichswehr, which it is allowed to use according to the Versailles Treaty. A light trench mortar. December 1930"

The weapon is actually a 25cm schwerer Minenwerfer, therefor a heavy and not a light trench mortar as the caption states. It appears to be also an older version of the weapon as the barrel is short.

Also, the uniforms look more Wehrmacht like to me (especially the insignias on helemt and sleeve). Maybe it is a picture of the early days of the Wehrmacht? I do not know the uniforms of the Reichswehr good, so it might also be just what the caption suggests.
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Evillittlekenny

Reichswehr Mortar

Probably May 1940.  Note the dead or wounded Wafen SS soldier being transported on the top of the tank.  Taken from the rare SS book &quot;Waffen-SS im Westen&quot;, (Waffen SS in the West), produced as propaganda by the Reich in 1941.   The book photographically documents the Waffen-SS campaigns in Holland, Belgium and France during 1940.  Photographs were all taken by SS war correspondents.  Excellent resource depicting uniforms, insignia, weaponry, etc for those interested.  I'll get more photos up soon.