Did you know that there's a festival day in Japan specially for kids aged 3, 5 and 7?
Shichi-Go-San (or Seven-Five-Three) is an occasion to celebrate a child's three age milestones, usually in the form of temple blessings and commemorative photos, and is recognised throughout the country.
In World of Tanks, hitting Tier III, V and VII are also considered milestone events, so it's only right that we celebrate this as well!