The two classic strategies were created. The double em elopment was used by the Russians in WWII against the Germans, but only succeed by the German high command demanding a ‘stand at all costs’ strategy. Shattered the Eastern Front for the Germans.
The second was that an exposed ‘tail’ of an army is highly vulnerable. Hannibal at the head was winning, or at least not losing. But by severing the tail, it cut off the head.
The Phoenician civilization’s ethics made the Romans seem pro life in comparison. The Romans only committed infanticide by exposure upon the unwanted. The Phoenicians ritually killed infants of the elites as on the red hot arms of the moloch demon statue, an old world analogue to the 100,000s of living hearts torn from bodies dumped down pyramid steps.
See also Lee at Chancellorsville. Cannae is my favorite,tho. A map hangs in my office.