The article linked in the OP is from 2011. If the guy was born in late 1901, then he joined the Army when he was 16 (or, barely possibly, 15 or 18). I suspect there’s a bit of a story there. Fudging one’s age to join up in time of war was not unique, but not exactly common, either.
What a different world the man was born into! Radio communication, electricity, cars and telephones were in their infancy. Not sure if movies and cylinder phonographs had been invented yet. Airplane travel, TV, computers were far in the future. Except for immigrants and people who served in their countries’ militaries, the vast majority of people in the world lived and died within a few miles of where they were born. Science and technology have advanced. I think it too kind to say that humans have remained the same: monsters like Lenin, Stalin, Hitler, Mao and other lesser monsters were yet in the future.