On May 4, Suho took to EXO’s official online fan community space in Lysn, and shared a handwritten letter announcing his enlistment. His letter reads as follows:
"Hello, our EXO-L. This is Suho.
I am writing this letter today because there is something I need to tell you all.
On May 14, I will be enlisting in the military to carry out my duties. I think I will really miss our EXO-L during that time.
I hope our EXO-L, who think of me and love me every day, will always be healthy. I sincerely thank you, and I love you.
We are one, EXO. Let’s love."
A source from SM Entertainment confirmed the news and stated, “Suho will be enlisting on May 14. The time and location of his enlistment will not be disclosed.”
This makes Suho the third member of EXO to enlist in the military after Xiumin and D.O.
source: @soompi, soompi, naver 1 2
I couldn't find a legit source for this, but some are saying that he's not doing active duty because of his bad eyesight (-14.00)