Yes its rather cheeky and definitely gamey!
I at least make sure there is an equal sized formed unit attacking the square at the same time
Most board games give an advantage to such a combined arms attack but really I have not been able to identify ANY case of both infantry and cavalry doing a combined melee on a square in any of my readings.
The infantry firing in support of cavalry who have forced infantry into square - Yes
Artillery bought up to deal with squares once cavalry have forced infantry into square - Yes
But no inf+cav melee.
The infantry seem to have been well out of the way in most cases where it was a planned and visible (to the friendly forces) cavalry attack.
Albuera was an interesting example where the Lancers actually attacked out of the 'gloom' / rain /mist (depending on the source) whilst the infantry were engaged at close range but again on a line and column not squares. The Highlanders attacking with the Scotts Greys at Waterloo another example but again the enemy were disordered/line and not square.
Anyone able to find any reference to a combined melee on a square by Inf/Cav?
I would suggest it didn't happen, as it wasn't required once the inf were in short range musket and or close range artillery. The squares simply surrendered or died in short order.
An interesting gamey topic
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