The WW1 Chaps..........
I am affraid I don't know who these chaps are in the first photo, and which one I am related too.
great grandfather Andrew Munn R.e
Cecil Henry Petts died at Gallipoli (great grandad Petts nephew)
Great grandad Fredk Cecil petts (both pic's at the end)
He survived the war, but was gassed, and damaged.
My mum's grandfather James Cannon, was shot in the arm on The Somme, and had his left arm amputated.
Her other grandad didn't get to fight in the great war as he lost his right arm in the print, he was a Compositor.