From The Wargamer, Vol.2, no.2

Korea

13.4 UN Reinforcements

On Game Turn 12: US 7/1 Mar III instead of US 7/7 Mar III.

There are no reinforcements on Game Turns 15 & 27 as indicated 
on the turn track.

18.21 On the Sea Display, the ROK units is the 1 ROK Mar III.

18.27 KPA units on the Pusan Perimeter must remain within three
hexes of the Pusan Start Line on Turn 12 during the Red Player
Turn.