What have been decisive weapons?

[Fragony]

Well the tactics Cumberland used with the Bayonet where each man protected the one to his right were limited in their usage. Plus, it required a lot of discipline for the troops to hope the man to their left would protect them. Despite the boggy ground hampering the Jacobite charge, the Hannoverian right flank still very nearly broke at Culloden. Thankfully it didn't.

Well yes but that is because other nations adaptod the bayonette later on, it really is an end of an era that just can't be denied.