Upsetting the Balance by Harry Turtledove

artistically arranged crate without stopping. So did three lorries in quick succession. Anielewicz’s heart sank. If his ambush went for nothing, he’d lose prestige in the band. He might have been the leader of Poland’s Jewish fighters, but the partisans here didn’t know that. As far as they were concerned, he was just a new fish showing what he could do.
    The last lorry in the convoy pulled to a stop. So did the troop carrier riding shotgun for it. Mordechai didn’t raise his head. He strained to catch the noises from the highway. A door on the lorry slammed. His heart thumped. One of the Lizards was going over to investigate the crate.
    His biggest worry was that the Lizards wouldn’t touch it because they were afraid it was rigged to a land mine or a grenade. Actually, that wasn’t a bad idea, but Mordechai was ambitious. He wanted to bag more Lizards than he could with such a ploy.
    He knew the exact instant when the Lizard realized the ginger was there: the excited, disbelieving hiss needed no translation. He wanted to hiss himself, with relief. Not all Lizards were ginger tasters, by any means, but a lot of them were. He’d counted on there being at least one taster among those who investigated the spilled crate.
    That hiss brought another male out of the lorry. Maybe the Lizard who’d made it had a radio with him, for a moment later hatches on the troop carrier came down, too. Anielewicz’s lips skinned back from his teeth in a savage grin. Just what he’d hoped for!
    Easy, easy . . . patient.
He willed his comrades to hold their fire until they could do the most damage. With a whole lot of luck, the fighting vehicle’s crew would get down along with the infantry they transported.
If
they were smart, they wouldn’t, but ginger tasters were more apt to be greedy than smart. Would they be foolish enough to forget about the heavy weapons the troop carrier bore?
    One of the partisans couldn’t stand to wait any more. As soon as one man opened up, everybody started shooting, intent on doing the most damage to the Lizards in the shortest time possible.
    Anielewicz threw his rifle to his shoulder and, still prone, started squeezing off shots in the direction of the crate. You couldn’t use aimed fire at night, not unless you had gadgets like those of the Lizards, but if you had put enough bullets in the air, that didn’t matter too much.
    Hisses turned to screeches on the roadway. A couple of Lizards started firing back at the partisans. Their muzzle flashes gave the humans hidden in the woods better targets at which to aim. But then the turret-mounted machine gun and light cannon in the troop carrier opened up. Anielewicz swore, first in Polish, then in Yiddish. The Lizards hadn’t been altogether asleep at the switch after all.
    With that kind of fire raking the trees and bushes, there was only one thing to do. “Let’s get out of here,” Mordechai yelled, and he rolled away from the road. The Lizards weren’t the only ones screeching now; screams from the darkness and Polish cries for the Virgin said some of those sprayed bullets and shells had found targets.
    The advantage of opening fire from close to the highway was that you were right on top of the enemy. The disadvantage was that you took a long time to get away from his guns. Not until Anielewicz scrambled behind an oak tree whose trunk was thicker than his own did he begin to feel safe.
    Firing from the road died away. Anielewicz didn’t think the partisans had hurt the Lizards so badly they’d call in air strikes. This sort of warfare walked a fine line, if you did too little, you didn’t harm the enemy. If you did too much, you were liable to provoke him into squashing you like a bug. The Lizards could do that almost anywhere in the world, if they wanted to badly enough. Keeping them too busy in a lot of places to concentrate on any one worked fairly well.
    Mordechai was walking a line himself, but not a fine one. It involved fetching