This Game is meant for Boy Scouts.

3 small flags or neckerchiefs
1/2 inch diameter rope about 15 feet long

Tie the rope into a loop

Tie the rope into a large loop and lay it down on the ground in the shape of an equilateral triangle.
At each corner of the triangle, step away from the triangle about 6-8 feet and place a small flag in the ground.
One scout from each of three patrols grabs the rope at a corner with one hand.
On 'Go' signal, each scout tries to pull the rope far enough to reach his flag.

Score for the first flag in each round.
Consider subtracting points if the rope is let go.