There’s a new initiative from WG to keep the ANZ (Australia and New Zealand) server a bit more populated, thus they are giving a rather generous invite code, working only on SEA.
AC1 Sentinel tank (permanent) + Garage Slot
T-34-85M tank (7 days rental period)
+ some yet undisclosed bonuses
Also, for the people who played the game already on the SEA server and decided to take a prolonged break, there’s a few bonus codes which give an ‘ANZ Recruitment’ mission.