Reminds me of how Aarne Arvonen was thought to be the living Finnish Civil War veteran for over two years. He died in January 2009 from pneumonia at 111.
Until it was found out that there was actually still (atleast) one other "veteran" of the war still living: Lauri Nurminen, white guard member at the age of 11. He died the following month at 102. God knows how many more there would've been if they counted anyone who gave food to soldiers etc into that list.
Last WWII combat veteran/someone who actually killed another person during the war? If we'd say that a man born in 1927 (18 in 1945) lives to around 113, Henry Allingham's age, that would be around 2040.
Not a lot of countries have run out of their WWII vets yet. Fiji lost its last one last year when Jale Bainisika died at 105, Samoa when Sualua Tui Masaniai died in 2019 at 97 and Papua New Guinea when Ben Moide died in 2013 at 89. Gambia still has atleast one: Ebou Janha.
I wouldn't count an auxiliary veteran who never touched a weapon a veteran, I wonder how many women who fought in the war are still alive. Atleast Galina Brok-Beltsova, last veteran of the 588th Bomber Regiment "Night Witches" and Phyllis Latour, but I could also find:
Rasammah Bhupalan (1927-) Served in the female combat Rani Jhansi Regiment.
Probably still hundreds or thousands of them out there, especially women who served in the Soviet army