I always thought that an Orc NE strategy would work. You could have the powerful orcs taking the damage in the front line, while the NE in the back start firing away. Plus, you can get a couple bears to help with melee damage, an use a roar to really boost damage. The NE also have great anti air units (unmounted hippos own anything that flies), along with Chims that destroy ground units. So with a Trueshot aura, any ranged units would get a nice addition to their damage, and same thing for anything that has the Roar effect on it.