Charge of the braindead brigade
I attack a Seleucid city, wherein their faction leader lies in wait. There garrison is light on numbers though, so I knock holes in the walls with my siege engines and set up hammer and anvil greeting parties. The Selkie king also comes out of the square to meet me, but stops a little distance short of my spearman block. So they run and mob his bodyguards, leaving only him running back to the safety of the square. Meanwhile, the returning wall defenders have been duly crushed between the bottleneck and the triarii in their rear. So far so good.
I systematically set up another hammer and anvil to deal with the square defenders, who consist of a phalanx unit and their escaped king, as per my advice on this. 2 lines of spearmen as the anvil, missile capable heavy infantry in their back, plus my triarii. The Italian spearmen advance to the edge of the square, then stop and dress their ranks. The Selkie defenders, offended by this impertinence, advance to meet them, the phalanxmen rather more enthusiastically than their general. Thus the phalangites lead the way, with the Selkie general hanging back slightly. Perhaps embarrassed by this display of cravenness, perhaps having got his courage up with a quick prayer before combat, our intrepid Seleucid king charges into the fray with a blare of trumpets...
...and impales himself on the phalanx in front of him.
Forget onagers and friendly fire, this was the most stupid death of any general I've ever seen, getting butt spiked by his own phalangites without even making contact.