[1] He became a colonel-general in 2014 by order of the Supreme Commander of the Armed Forces of North Korea, Kim Jong Un.

In 2016, following the decisions made by the 7th WPK Congress, he was elected to the 7th Central Committee of the Workers' Party of Korea.

[3][4] In April 2019 he was elected to the 14th convocation of the Supreme People's Assembly, representing the Pongsusan (170th electoral district).

Following the death of Kim Jong Il in December 2011, he was also a member of his 232-members funeral committee.

[8] A picture of Yun shows him wearing the ribbons to all decorations awarded to him.