Unfortunately, the original author either did not see a reason to explain what had happened before Sinuhe’s flight from Egypt, or it was removed from the copies that have survived to the present. Sinuhe makes a point of claiming that he was not deserting the army in Libya, but later the king states that he knows that Sinuhe was not plotting against him when he fled Egypt. This suggests that someone had conspired against Senusret I at the beginning of his reign, however, the events of this plot have not survived to the present. It isn’t clear if the details were removed out of respect for the king, or if the author simply expected everyone to know what had happened.
The identity of Sinuhe is also somewhat unclear from the surviving texts, however, he appears to be a relative of the Queen, who had grown up with the future king Senusret I. He may have been the army commander sent to conquer the Libyans at the end of Amenemhat I’s reign, as he begins his story there, however, he could have simply been a lieutenant. As a member of the nobility, he was unlikely to be a common soldier. Later, in Syria, he claimed to be a great hero, defeating many enemies on behalf of the local king, suggesting he was well-trained in combat.