Actor Yoon Si Yoon has secretly enlisted in the Marine Corps.

He entered marine training in Pohang on April 28 in the afternoon.  His agency Taxi Entertainment said, "Yoon Si Yoon entered [training] at 1:50 PM KST.  He will be serving as an active-duty soldier in the marines for two years."

SEE ALSO: Min Hee Jin exposes Bang Si Hyuk's text messages & denies she was involved in GFriend's contract termination

Yoon Si Yoon previously said through his agency that he wanted to enlist as quietly as possible in order to avoid harming the other soldiers.  It appears he held true to his word.

His agency explained, "We followed his request and did not disclose this to outsiders. He wanted to serve not as an actor but as a healthy man of South Korea."

He will train for seven weeks, so wish him the best of luck!