Master Kodama said:
units that fight in a tight formation (Spearman, Pikeman) should be strong, particularly against a frontal charge, but should be susceptible to flanking.
Spearmen didn't necessarily rely that heavily on their formations. They could split up, turn around, etc. without much trouble. Of course, like pretty much any soldiers, they benefited from having organized formations, but they were hardly mandatory.
Certain types of spearmen were different. Traditional Greek hoplites, for instance, fought in a comparatively rigid manner. All pikemen did as well, of course. But not all spearmen fought in rigid formation, not at all. Roman legions certainly didn't fight in particularly rigid formations; each cohort or maniple manuevered as a unit, independent of the army as a whole, and could turn to face threats without more trouble than any average infantry unit.
The only units that should be affected by this, basically, are a) Pikemen and b) certain types of spearmen (maybe make a second Spearman unit representing fighting styles such as the hoplites').
Master Kodama said:
Light Mounted Units would be primarily those mounted units effective at flanking (Horse Archers), and would gain bonuses against formation units, while Heavy Mounted Units, charging "frontal assault" type cavalry (Knights), would be powerful but have a distinct disadvantage against Formation Units much like in the default game.
I don't know if this is very realistic.
Any cavalry will have a tremendous mobility advantage over any infantry. I would give all cavalry flanking bonuses, but lighter cavalry would get greater bonuses.
Master Kodama said:
I was thinking that this "Horseman" could come with horseback riding, and the Horse Archer could come with a new Classical tech, Stirrup, but this set-up could be the opposite if people think it would be better and/or more historically sound.
Both heavy cavalry and horse archers existed centuries before the stirrup. Horse archers should be available with Horseback Riding plus Archery, and heavy cavalry with Horseback Riding alone (plus maybe Bronze/Iron Working, since you can't have heavy cavalry without heavy armor). Horse archers, incidentally, should receive prohibitive penalties when either attacking or defending in jungle or forest; they should also receive lesser penalties for fighting in hills or snow. And they should have nasty penalties for attacking/defending cities as well, but they (in fact, cavalry in general) shouldn't automatically lose all defense bonuses.
Master Kodama said:
One question is, should I make Musketmen (and Line Infantry if they're included) into Formation Units to give Cavalry more use as flanking units and better simulate combat? Or maybe make a new "Gunpowder Formation" group? I think the latter makes the most sense, but I feel like I'm splitting enough hairs as it is
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I like the idea of effectively having "dual types". Formation troops should also be able to be Melee, Archery, Gunpowder, etc.