Funfact - you almost had pikemen in the american civil war...
http://opinionator.blogs.nytimes.com/20 ... last-pike/
Zinegata wrote:Pikes during the Thirty Years War / Great Northern War / Swiss Pikemen period were mainly employed as a counter against cavalry though; which is quite different from the traditional Greek Phalanx which was really meant to go head to head with another Phalanx.
Exceptions exist of course (English Pikemen for instance assaulted a hill held by a Spanish Tercio during the Battle of the Dunes) but their tactical employment really differed from the Phalanx model.
Which is why the Pikemen get dropped once people figured out that you can do the whole "pike wall" thing against cavalry using muskets and bayonets.
To add to what Thanas said.
In the Great Northern war the swedes didn't use bayonets but it was a tactical choice to do so. The tactics was basic shock tactics with the intent of fast aggressive attack that will break the other side. Since bayonets was crap in meele vs pikes they were never an option. The guns used by the opposition at the time was simply not accurate nor reloaded as fast as necessary for continued exchange of fire.
So instead the swedish tactic was use their cavalry+cannons to maximum effect, then charge with the infantry, usually letting the other side shoot first then shoot at point blank and then let the pikes (and axes, clubs, rapiers etc) charge into the still reloading and already disheartened enemy. Then when they broke you continue the charge with inf+cav.
Having such a tactic you could exploit any suprise or chance happening or change in the movements on the other side. The armies of the day wasn't usually prepared for a suprise full frontal like that.
Check out the battle of Narva in 1700 or Holowczyn in 1708 for the success of that tactic.
It relied on your troops being of a higher quality and disregarding losses in the advance, ie if you stop you are dead. Also you needed very high discipline in the movements so that you could sneak up and come at direction not expected etc. (Very much the ideal of an elite force trusting in god).
This is also why the very same tactic didn't work at Poltava. Without suprise and without a clear troop to attack, with several gun bastions and with a lower discipline and moral due to winter and starvation it was a disaster.
So no, pikes were not mainly used to counter cavalry although they were good for that as well. Instead they were very much used to charge head-to-head into the defending line and to be used in meele. The swiss had similar ideas depending on which era you are refering to. The thirty years war saw a lot of pike action. Heck you saw pike action at waterloo.
And no the pike was not dropped because you could defend against cav with bayonets. It was dropped because the accuracy increased and like you yourself pointed out that the reloading time decreased on the firearms. And the most important factor - factories. ie mass production in large scale of firearms made it faster and less costly to produce the once so expensive firearms. See Peter's reform of Russia where the most important was huge factories churning out massive amounts of weaponry.
So more and better guns let you arm less and less trained men faster. This saw the decline in the smaller well trained units vs the mass infantry. (Until Napoleon who showed that you could do both).