![](https://www.historynet.com/wp-content/uploads/2017/02/JapanTanks3.jpg)
In 1929, Japan completed the prototype for the mass-produced Type 89 I-Go medium tank. (Asahi Shimbun via Getty Images)
Asahi Shimbun via Getty Images
In 1929, Japan completed the prototype for the mass-produced Type 89 I-Go medium tank. (Asahi Shimbun via Getty Images)
Asahi Shimbun via Getty Images