Career
He holds the singular Philippine Government Record of continuous longest serving public Officer from April 1937 to January 2001 or a total 63 years and 9 months spanning twelve Philippine Presidents. PMA Cadet
Yan entered the Philippine Military Academy (PMA) after graduating in the Arellano High School in 1937 and became a part of the PMA Class of 1941. On graduation day, Manuel Yan received the Presidential Sabre.
This is a symbol of superiority in both academic work and military training, from Vice President Sergio Osmeña, the commencement speaker.
Many young boys who join the PMA do so after one, two or even three years of college work. Military service
He joined the Armed Forces of the Philippines in 1941.
In 1942, he survived the Pantingan River Massacre, which took place during the Bataan March. Chief of Staff of the Armed Forces of the Philippines
In the AFP"s history, Yan (at the age of 48) was the youngest military personnel who held this position.
However, Yan resigned his post in 1972 because he did not want to be involved with the implementation of Martial Law.
He served the foreign service from 1972 to 1992 in various capacities as first Ambassador to Thailand up to 1981, then Ambassador to Indonesia up to 1987. After the resignation of Secretary of Foreign Affairs Salvador Laurel, he was nominated as Secretary of Foreign Affairs from February to October 1987. After which he served as Undersecretary of Foreign Affairs up to 1990 and finally as Ambassador to the United Kingdom up to 1992.
From 1992 - 1994, he was appointed GRP chairman negotiating with Moro rebels.
In 1994, President Fidel V. Ramos appointed him as the Presidential Adviser on Peace Process which he retained until the overthrown from presidency of Ramos" successor, Joseph Estrada. He was awarded on February 2008 an honorary degree by De Louisiana Salle university Manila, a degree of Doctorate of humanities honoris causa for being the longest serving government official serving eleven presidents from Manuel Quezon to Joseph Estrada. he served 63 continuous years from 1937 to 2001 a record which has not been broken to this date.
Yan died on December 4, 2008 in a hospital in Pasig City.