my estimates (battle for Seoul) assuming North Korea attacks first, using 2000 forces:
First phase (red lines) 0-10 hours: are the first wave of North Korean attacks. Localized breakthroughs could be achieved, but no significant progress by the north Korean armies. North Korean artillery would cause a certain amount of damage to Seoul. However, the majority of North Korean guns would be destroyed by air-strikes and counter-battery fire.
Second phase (blue lines) 10-24 hours: South Korean localized counter attack. South Korean strategic reserves are used. Reserves and militia are mobilized. At the end of this phase, south Korean forces would dig in at the green line
Third phase (brown lines) 24-96 hours: South Korean forces would take back and restore prewar positions. American forces start to arrive. Both sides dig into their prewar defense lines, creating a short-lived stalemate. South Korea destroys most of the North's air power. Continued air strikes would cause damage to North Korean Forces
Forth Phase (black lines) after 96 hours: South Korea drive into North Korea with assistance from international forces
what do you guys think?