naomi,
I have no wish to pick your answer to pieces,but I must just address one of your lines:~
" When I asked the question, I wasn't thinking about people helping each other on a personal basis, but rather of the community spirit that existed within those who helped wherever they could, for example in extinguishing fires, and rescuing people, or digging out bodies, buried in rubble."
When a house was bombed,or people were possibly trapped,or the house was on fire etc;ALL civilians (related to the trapped etc or not) were kept well away from the scene.Ordinary persons were not allowed anywhere to a collapsed building etc.This was left to the wartime Ambulance and Fire Brigade,and they were VERY strict about this.I arrived (in uniform) on the secen of my Mother's house just after it was bombed,and even though I was in uniform I was not allowed within one street of the site.
This came from early on in the war when civilians were assiting the emergency services at the site of a bombing.What they could not know was tha there was another unexploded(large) bomb under the house.It went off killing about 60 people,few of whom (then) were emergency services.After that,the above came into force,and while quite a few emergency service workers were killed,no civilians die this way after the change.
Sorry to pick you up on this,it's not meant to be pedantic,I just get sad when what I know is getting lost.