A 21-year old Gilmour joined the band in January 1968, and Pink Floyd briefly became a five-piece. Gilmour had been asked to join to provide "cover" for Syd Barrett, as Barrett was indeed becoming increasingly erratic / unpredictable. When Barrett and Pink Floyd finally did part company just a couple of months later, Gilmour began to assume a much more prominent role, both as a frontman and a songwriter.
The first album he contributed to was 1968's A Saucerful of Secrets, playing on 4 tracks, and co-writing the title track. He was more fully involved with 1969's soundtrack album for the film "More", co-writing most of the tracks, and singing all of them. Gilmour coming on board was not a bad thing, as he was fundamental to the success the band would later enjoy on albums such as The Dark Side of The Moon and The Wall.
S input was especially important on The Wall and Wish You Were Here. It will always be interesting to consider how Barrett might have effected the music if he had remained on board, but the legacy of the Pink Floyd that included Gilmour is there for all to see.
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.