Related Rule
Republic of Korea
Practice relating to Rule 66. Non-Hostile Contacts between the Parties to the Conflict
Section B. Use of the white flag of truce
The Republic of Korea’s Operational Law Manual (1996) states that it is the expression of surrender for a soldier or a unit to display a white flag. It is also generally used for initiating negotiations. 
Republic of Korea, Operational Law Manual, 1996, p. 179.