The Type 5 Chi-Ri was one of the last tanks produced by the Japanese military
during WWII. The "Chi" stands for the first syllable of the Japanese word for
"medium tank" while "Ri" refers to a character used in the old-style Iroha
Japanese syllabary.
The Chi-Ri was a large tank design fitted with a license-built BMW aircraft
engine and armed with both 57mm and 75mm guns. Only a single example was
completed by the end of the war, and this was taken for evaluation by American
forces after WWII.