I think it is most likely that King Arthur is a combination of people.
The early Welsh would know best. But the stories that eventually emerged of "King" Arthur, the round table, and so on, are most likely composites of fantasy and a cluster of historic figures.
He didn't exist as one person He was a mixture of myth, legend and got mixed up with some facts.
There's no solid historic evidence for an individual such as he though there possibly was a tribal leader or leaders who's exploits where mixed in oral traditions over time to make Arthur.
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.