Sweden[]
Armored vehicles manufactured and fielded by Sweden are currently the 2nd newest in the game next to Poland being the newest.
Although Sweden remained neutral during World War II, Sweden developed several tanks and a fine tank industry. German designs laid the engineering foundation for early vehicle development and the Swedish military harnessed their country's attention to detail and the employment off the Irish Landsverk company to develop an array of interesting models.

0.9.17 Swedish Tech Tree
The rich and varied Swedish tank building industry provided enough machines to make a diverse tech tree. Two lines of Swedish vehicles were introduced into the game in Update 9.17: A line of tank destroyers, and a hybrid line of light, medium, and heavy tanks all produced by German, Irish design, and the EMIL tank projects.