The LDS Church sponsors a massive missionary movement involving about 54,000 young missionaries at any one time (typically a ratio of four male "elders" for every female "sister"). There are currently 330 missions underway in 162 nations.
Mormon missionaries are usually between 19 and 21 years old and dedicate two years of their life in seeking converts.
They live under very strict restrictions devoid of entertainment and contact sports, and adhere to a specific dress code.
In the past, missionaries could indicate a preference for their country of service but now they go wherever they are called. Mormon missionaries finance their own way.