A Japanese Type 59 Ha-Go replica (you can clearly see the modern engine inside). The Ha-Go was one of the most common Japanese tankettes and was used throughout the war, especially during the fighting on various Pacific islands. Poorly armored and armed, the Japanese tanks have a lousy reputation, but this is a bit undeserved. By the time they were designed and mass-produced, these vehicles were completely adequate. They were not designed to take on Shermans or Stuarts in one-on-one combat, their purpose was to defeat droves of untrained (Chinese) infantry with bad morale and leadership, a task in which they excelled.
Here's a video from a re-enactment with this tank, very interesting:
Would love to have this screams added to the national voices of WoT as a battle start!