He frowned, clearly thinking hard, before nodding. "So a massing of troops at this end of the cleared area would be considered an act of desperation then?"<br/><br/>He tapped the clearing where they had expected to meet the troll army, and once they had nodded at his question, he allowed himself to smirk. "Then lets give them something to mass against. The traps I used were mobile ones, meant to be carried on a person until needed. Since we know what direction they will come from, I can build larger ones in the field between where they will mass and our lines, thinning out charges. After a couple charges get utterly shredded, even the dumbest troll will get the message, and I think I can force their leader into the open, if only to save face with his backers. If I get a full day to work, I can get enough traps to wipe out at least three charges, possibly as many as five, and leave enough things that look similar to them to utterly demoralize the troll army. No army can charge when the troops are wondering if the next step will bring them in range of a trap, and if they keep lagging to let someone else lead and take the first hit, then the charge turns into a rather embarrassing shuffle forward."<br/><br/>He considered the terrain, before thinking of something. "And if you have war mages with illusionary terrain spells, have them use them on the defenses you will be erecting to receive the charge. If a couple seem to get impaled on thin air, after the rest get shredded by my traps, then I think the trolls will go hide in caves for the next millennia, in fear of being considered the laughing stocks of the giant races."