Ryoji Uehara, a flight captain of the Imperial Japanese Army and was killed in action as a kamikaze pilot at the age of 22.
His last letter "My Thoughts" written the night before his final mission is regarded as a wartime literary masterpiece.

>My Thoughts: It is a clear fact that authoritarian and totalitarian regimes may sporadically prosper, but they ultimately will perish. We can see the truth of that in the Axis governments. As manifested by the defeat of Italy under Fascism, not to mention Germany under Nazism, authoritarian governments are disappearing one after the other, crumbling like buildings without a foundation.

>The ambition of making my beloved Japan become as mighty an empire as Great Britain has faded away. If the leading positions in Japan had been held by those who truly love Japan, my country would not have been driven into the situation it faces today. Japanese people who walk confidently anywhere in the world, this was my dream.

>What a friend of mine once said is true: A pilot of the Special Attack Unit is merely a machine. The machine that takes the control stick, possessing neither personality nor emotions, is only an iron molecule within a magnet that will stick to an enemy aircraft carrier. If one thinks rationally, this act is incomprehensible and these pilots are suicidal. Since I am nothing more than a machine, I have no right to put my case forward. I only wish that the Japan that I dearly love will someday be made truly great by my fellow citizens.

>Tomorrow is the sortie. One liberalist will depart from this earth. His appearance from behind is lonesome, but his heart is full of contentment. I said only what I wanted to say. Once again, please forgive my selfish ranting. Well, here I will stop.

https://en.wikipedia.org/wiki/Ry%C5%8Dji_Uehara