some suggestions for events
Allied Terror bombing rallies the German people closer together.
Historically strategic bombing was supposed to brake the morale
of the opponent and cripple the industry. While the industry part
succeeded to a degree, the population considered the bombing of
their cities as terror attacks and reinforced their believe that Germany
was in a struggle for survival and instead came closer together.
Hitler's propaganda regime (who had initially started this line of thinking with their attack on Coventry) exploited this and bomber crews that had to bail out over Germany on the ground often had to be rescued from hostile
crowds (not Krauts

)
In game terms this could be triggered after a certain date by allied
strategic bombing and reduce unrest by 1.
England Coventry
It has now become a matter of accepted fact, at least among the British public, that on the night of 14 - 15 November 1940, rather than compromise a decisive source of intelligence, Winston Churchill allowed the city of Coventry to be left to the mercies of the German Air Force.
According to Group Captain Winterbottom the name Coventry came through in clear type on an "Ultra" decrypt on the afternoon prior to the raid. According to the evidence presented in the book the name of the city came through at 3 PM on 14 November 1940 and was immediately telephoned by Winterbottom to one of the Prime Minister's private secretaries in Downing Street. (THE ULTRA SECRET pages 82-84.)
This briefly is the position of those writers who believe that the city of Coventry was left by Churchill to the mercy of the Luftwaffe, rather than reveal the secret that the German codes had been broken.
in game terms
British can decide to give up ultra secret and intercept the raid ( maybe gain
2 fighter squadrons while the Germans gain some electronic tech)
or let it commence.
Maybe strategic bombing of England by Axis bombers can trigger
a small manpower gain.
Germany boys for the antiair defenses (Luftwaffenhelfer).
Late in the war 1944 a German event could be the mobilization of school
kids for the anti air defenses of major German cities. The lack of man
led to the recruitment of 14 - 16 year old boys to man the anti air craft
guns. (Raise some AA level in German cities.
a good source for some background is this website
http://www.hco.hagen.de/ruhr/uk/uk-3.htm
Germany The last Stand
When Russian forces came closer to the German heartland and reports about Russian war crimes where distributed by the German propaganda in a last
desperate measure the Volkssturm was fully mobilized and any male from
12 up and that was not already in the armed forces were given a Kar98
and a Panzerschreck to defend their local village/city. While in the West these units were usually not very effective in the East against the Red Army they usually fought to the best of their abilities.
In game terms whenever Russia takes certain German provinces in the East
like Koenigsberg then single Volksturm units are spawned in the Eastern provinces.
England The V2 terror
The V2 attacks on London truly terrified the population because the rockets speed gave civilians no time to search for cover. In contrast to the V1 they couldnt be shot down easily and so the city felt helpless against the arbitrary rocket attacks.
in game term raise the english discontent by 1 for the 1st V2 attack against the british.