The original words of the sentence on the fourth floor are:

Tell the head of state that I will never surrender

Tell my mother that I still love her

Tell my father I tried my best

When the enemy's bullets pass through our bodies

When the sun sets with the hope of the Empire, we will never surrender. We will always be the soldiers of the Empire.

My honor is loyalty!

This is the content of the last letter home written by an army sergeant who was besieged in the Battle of Stalingrad to his family