SM fans will have to temporarily bid adieu to four artists from the megapower agency this year.

Super Junior's Siwon, Donghae, Eunhyuk and TVXQ's Changmin will all be enlisting in the military to serve out their compulsory service for the next two years.

Donghae and Eunhyuk will start the wave in October. Eunhyuk will enlist on October 13th, followed by Donghae on the 15th-- which also just so happens to be Donghae's birthday.

Siwon and Changmin will then follow suit; the two will both enlist as conscripted police officers on November 19th.

Fellow Super Junior members Shindong and Sungmin, in addition to TVXQ's Yunho are all currently serving out their duties.