Here it is
basically you are right, 600 people, 300 on each time the teams are north of england vs south. if you like rec ball you'll love this, no need to bring a team but u might wanna bring a few mates so u dont get lonely. its played over a massive area.
it is over 2 days, and there have been people selected as 'generals'. they give all the tactics at the beginning of the day, and if they are killed you get big points.
there is usually things to do other thatn having massive paint slinging competitions, like grabbing a nuke or parts of an important file etc