Democracy forever
POD: May 1939
Current Year: 1958
Statistics only apply to Germany itself and the German Mandates of Littoral and Tyrol.
Side note: The POD is between the color change from Fascist Brown to German Grey.
The Message spread like a wildfire through all of Europe.
On a public exhibition in Nürnberg, Hitler was shot by an unknown attacker. The Event was live seen by more than 50,000 visitors so it was impossible to hide it via Gestapo.
The Führerkult, designed to server absolute obey to Hitler, was destroyed in one moment. The party lost its leader and master.
The NSDAP which acted like a shot but still alive animal slowly bleeding out searched for a guilty one.
While their institutions slowly were failing due to the lack of the Führer, they decided to publicly execute two social democrats and a politically not aligned person as the "murderers". Although it was made publicly by a group of Journalists (which were imprisoned afterwards) that these three people
weren't even in that City and Region at that timespot. The executor simply ignored the message and the three were executed.
But this enraged even a significant chunk of the Nazi supporters (approx. 13-37%): The NSDAP was supposed to get rid of Jews, Roma and Slavs, but not of wealthy and innocent German men!
A revolution occured under the leadership of social democrats and liberals, while the also enraged Nazi supporters helped in hope to just "restructure the NSDAP". With little outside help (*cough* France *cough*) the Revolution was able to overthrow the NSDAP government and reestablish the Weimar Republic under social democrat leaderhip, much to france's benefit who also were social democrat and wanted to prevent an NSDAP to attack France for Alsace. The two Government neared themselves another time and German Chancellor Scheidemann who reigned until his death in 1941 was able to regain German prestige by regaining Danzig and establishing a shared corridor beween Poland and Germany in exchange for a part of the still-german puppet of Bohemia-Moravia. It was also his last legacy to rejoin into the League of Nations, just before Italy declared war on France and Germany to gain Areas promised as "Italian Lands" by Mussolini to recreate the Roman Empire.
Scheidemann died during the second World War, but the work of him and his party was paid off with Germany staying side on side with France, Britain and America against the Fascist Regimes we all know.
During the fight with Italy, Germany was able to annex a large part of Slovenia during the occupation of Yugoslavia by Italy and Turkey in 1942. The War ended in Europe 1944 while Japan lasted until 1948.
In 1945, two LoN Mandates were given to Germany showing the brilliant integration into the League. They weren't the largest, but Germany was grateful to having regained its prestige and reliability that they'd get such mandates. They comprised of Tyrol and the Italian Littoral, representing the Area owned by Habsburg Austria/Cisleithania prior to the 1st world war.
The mandates had, similar to what was the OTL Ostgebiete, the sole purpose to resettle the Italian Residents from these areas into Italy proper. This was made to prevent Italy from ever making claims on Tyrol, Littoral and Yugoslavia again. While Italians were violently displaced, a cordial resettlement of the resident croats in Littoral was arranged with LoN member Yugoslavia.
Although officially mandates, They are widely seen due to their major German population and the Course of African Mandates as part of Germany. Czechia is sort-of independent but still a puppet.
The shared Poland Corridor was replaced by a Land of Germany a bit later as a new law was introduced by the LoN, allowing Germany to own this area entirely and to occupy it, but letting Poles trespass without tolls or restrictions (Army does have restrictions). In General, Europe is leaning towards what we call OTL the EU. First Condolences in economy have been made between France, Britain and Germany to prevent trilateral wars, while the wish of the young population to create a united Europe has become very popular.