So what do you think they were too thick to understand Scot Bloke?
"Germany invaded belgium and France."
Not complicated.
"We might be next."
Not complicated.
"Treaty obligation"
Not complicated.

I showed you the Daily Mirror of day one.
It was all laid out there.

Can you find anything, even by long dead historians, that says the people did not understand or support the war, or are you making shit up?