There was no such man by the name of Nathan Algren present during the Satsuma Rebellion, but his real-life counterpart, a man by the name of
Jules Brunet, was. Jules Brunet went to Japan to train Soldiers in the art of modern tactical warfare. However, he unfortunate enough to be present during the war between the Tokugawa Shogunate and the Imperial forces. Once the fighting broke out, the Emperor ordered the French forces to return home. This was due to them training the Shogunate, who are now an enemy of the nation. The French forces withdrew and headed home, but Brunet chose to stay and fight on the side of the Tokugawa. This was an act that would be of the highest degree of treason. Historians are not entirely sure the reason as to why Brunet chose to make this decision that would have cost him everything he had worked for as a military officer. Over time, the Tokugawa Shogunate began to lose ground. Ultimately, the remaining fighters had to flee to the island of Hokkaido, which became the Ezo Republic under the Shogunate. In the end, however, the Shogunate was wiped out during the battle of Hakodate. Luckily for Brunet, he was evacuated out of Japan just in the nick of time aboard the
Coëtlogon, a French warship, where he was escorted back to French controlled Saigon. Brunet’s absurd choice to stay and fight for a war that he had no personal investment in still baffles historians. However, it was his actions that ultimately inspired the plot for
the Last Samurai.