Don't be a fool. Radio back when a real emergency happens.
Hamburg Military District upon a message that thousands of Rommel's communist's had stormed across the German border
Source A - The borders before Operation Pure Morning
...Pure Morning took the Weimar Republic completely by surprise. For a year nothing had happened on either side of the conflict apart from a few short border skirmishes. When on May 19 1931 the KPD army broke the borderlines German troops had no option but to fall back west with great speed. Hundreds of kilometres of land were taken by the communists, for a loss of only a fraction of their armed forces.
It was an astounding victory and left the KPD forces in a much better position, they now had what looked like the upper hand in the war.
However, it would still take many years before ultimate victory was to be achieved.
1931-34
The communists began a steady march forward, pushing the German troops back, slowly, but surely. One of the major battles of this period was that of Bremen, 1933.
15 000 communist troops attempted to storm the city but were held up by the populace who had armed theirselves and garrisoned the city.
The KPD troops were forced into a bitter and humiliating retreat, leaving 1000 dead and many more wounded to be finished off by the militia.
Source B - A communist General writes about Bremen
We have suffered horribly on these plains, who'd have thought such militia could overcome the communist war machine?
However, soon, very soon, these people shall realise the glory of Marxism. Either that, or we shall make them realise it.
Reinforcements arrived and a siege of the city began, the communists afraid to assault again.
The city finally surrendered in February 1935. Anyone in possession of a gun was shot.
Intervention
Not only German troops fought in their civil war. Troops were sent from the USSR to aid the communist's struggle whilst French, British and US troops provided the main support given to the Weimar Republic. However language proved to be a major problem and attacks ended up disorganised and uncoordinated. It was not uncommon for entire battles to be "lost in translation".
But, upon the end of the war and the eventual defeat and annexation of the Weimar Republic not all the anti-comintern lost out. Polish troops marched into the largely ungarrisoned Prussia, seizing it for themselves. French troops captured the Saarland and much of the Rhineland which was then given to Luxembourg to provide a buffer zone against the rising communist state.
Much of Bavaria was also lost as it elected to join the fascist Austria, rather than join the new communist Germany.
Source C - Germany at the end of the civil war.
From A brief history of the KPD, 1930-1970