Wedge Formation and is it any real use?

[Suppiluliumas]

The wedge is best used obliquely to the main battle line, or in the flank or rear (see alexander's use of the companion cavalry). Using a line formation with cavalry will quickly get them involved in prolonged melees with larger units. If they happen to have the stats to handle this, then so much the better, but otherwise, they should be kept concentrated and on the move at all times.

[Uesugi Kenshin]

I find that the wedge is generally best when used on the flank, as others have said, however, it seems to be that using a broad front flanked by two wedges may mix the specialties of each. Though this may not be true, it does definately look cool! I agree that broad front attacks are more all purpose, but I think the wedge has some advantage in ripping open an enemy unit.