Yes, the system can run wthout the battery installed while connected to AC power. While the system is weatherproof, for safety reasons, you should not use it in the manner described above where water is present. More.
I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.