Well, without knowing the exact 'first soldier story', it's hard to give a definite account. However, generally, such a story might begin with the soldier's enlistment. He could have been motivated by patriotism or a sense of duty. As he entered the military, he faced rigorous training. Then, in his first real military operation, he might have encountered various difficulties like harsh weather, tough enemies, and limited resources. His story could be one of perseverance, survival, and ultimately, heroism.