What was Tokchae's mission for the league?

Unfortunately, the story does not provide an answer to this question. Tokchae has been
captured, and he is being escorted by Songsam to a new location. The two men are on opposite
sides of the Korean conflict, but they grew up as friends in the same small village. As they are
walking together, Songsam demands to know what Tokchae's mission was.

If you were vice-chairman of the Communist League, why didnt you
run? You must have been lying low with a secret mission.

Tokchae did not
answer.

Speak up, what is your mission?

Tokchae never answers the mission...