The North Korean forces launch a huge new offensive against the entire Pusan Perimeter, hoping to break through at least somewhere along the line. They are aware that time is of the essence, for the UN forces grow in number daily, while they are losing a battle of attrition. Some new UN arrivals this week are the first British ground troops in Korea for the fight. Meanwhile, Douglas MacArthur's plans for his upcoming surprise counteroffensive hit all sorts of snags thanks to Korean geography.

This week sees the UN forces execute Operation Chromite, the amphibious invasion of the port of Incheon, far behind enemy lines. There are many hurdles to clear before this can happen, including the physical one of one of the world's largest tidal ranges, which leaves many kilometers of mud flats in the approaches. There is also a UN counterattack at the same time, designed to perhaps break out of the Pusan Perimeter, or at least tie down big chunks of the enemy in the south.