Rainer was born on1899 in Graz which is a part of Austria Hungary. He was born to average height parents. Unless other children Adam Rainer was born as a dwarf with large hands and feet compared to his body which gave a traumatic shock to his parents and doctors. But, due to his lack of height, they all just thought that he was having a disorder called achondroplasia, which causes dwarfism
His teenage (the age when he has been rejected for the army twice)
At 18 years due to his dwarfism (his height used to be 4 feet 0.25 inch ), he was rejected from joining the army as he was not strong enough to be a soldier then he again tried at the age of 19 but again he was rejected as his height at that time was 3 feet 7.9 inches which was a very drastic change due to his dwarfism. After being rejected he wished that he could be tall and strong enough to be a soldier. As, there’s a saying that one needs to be satisfied with what one has otherwise they will face the consequences. Adam Rainer too became an example for this as something miraculous happened in his life which has not taken place in any other human.