You're supposed to be able to attack within 50 meters. But when people are moving at such high speeds it's hard to be within 50 meters of someone for two straight minutes (two ticks on map). I was within 13 meters, and was set to attack him, is it that hard for a battle to be initiated under those circumstances? If two armies, 1600 vs 1700 are within 13 meters of each other, and one side wants to fight, you're gonna have a fight on your hands...but not in strat.