Well to put it simply I thought it might be fun to roleplay the planned Nazi invasion of the United Kingdom codenamed Operation Sealion. This would be in a timeline where operation Barbarossa was never enacted and the Nazis never invaded the Soviet Union as well as Operation Dynamo failing, meaning the military of Britain would have been shattered, most of the fighting force, KIA or POW.
As a quirk I thought that it could be interesting to play as part of the Cadets, an organisation for teenagers that taught fighting skills to the youth for when they would join the army. Now an interesting fact is that they were also considered the last line of defence for the country, given access to outdated WW1 era weaponry to train with.
The plot would begin three days after the initial invasion. Where a group of cadets has taken it upon themselves to kill as many of the enemy as they can as they penetrate into the heart of London. Where upon they will discover just how cruel war can be.
Just floating ideas, if anyone has suggestions feel free to say them.