Well, here's the possum theory, but understand the following applies only to single-player
Of my melee troops, I go with roughly 1/3 heavy cavalry, 1/3 heavy infantry, and 1/3 light infantry.
Light cavalry can be useful in the early stages of either campaign, but becomes less and less useful in the mid-game to end-game.
For fire troops, I stay away from javelin troops, and favor archers. Ideally, I would have a body of archers equal in number to one of the thirds above.
I almost never recruit more than 13 or 14 units, total. I have completed a campaign with as few as 10 troop units. The rest of my denarii I spend on equipment.
For skills, I have evolved an almost rigid system.
For Infantry, light or heavy, it's like this -
Swordsman, Drill, and Feint, in that order, over and over. At Level 6, I interrupt the cycle to take disciplined formations, for any infantry type that has it available.
At Level 12, Master Swordsman should come up in the rotation.
At Level 13, take Frenzy, and your troops become killing machines.
Usually I go for Missile Protection after that, and maybe Block.
Now, Roman heavy infantry types do not get Disciplined Formations (they are disciplined from the start), nor do they get Frenzy. But the rest of the system still applies.
For cavalry, it's like this -
Swordsman, Drill, and Feint, in that order, over and over. At Level 8, I interrupt the cycle to take Trample.
At Level 12, Master Swordsman should come up in the rotation.
At Level 13, take Frenzy, and your troops become killing machines.
Usually I go for Missile Protection after that, and maybe Block.
Now, Frenzy is the key to this progression, but it lowers your armor rating, both melee and missile. I make up for this with a combination of skills (Block and Missile Protection,
after Level 13), and equipment.
I usually do not buy any of my troops equipment better than Weapons 1, Helmet 1, and Armor 1 until after I have recruited all the troops I am going to use for the whole campaign.
I make a point of buying my archers Stronger Bows, Extra Arrows, and Heavy Missiles as soon as those items are available. I do
not buy my archers any other equipment improvements except maybe a helmet late in the campaign. Archer skills are totally different. The key skills are obvious; they have that little red-and-white bullseye symbol next to them! When no "bullseye" skills are available, I go with skills like Drill and Endurance. Skirmish is a great skill. Train it as soon as you can.
Elephants suck.
Fanatics suck.
Praetorians are very, very fine troops.
Do not, not,
not underestimate the importance and power of light infantry. In anything but clear terrain, good light infantry will eat heavy infantry alive, and not even spit out the bones.
In anything but an absolute emergency, keep your cavalry and heavy infantry in clear terrain, at all times, at all costs.
There will be a few scenarios where you have no choice but to send your cavalry and heavy infantry into the woods. Needs must when the devil drives. But most of the time, you can work the terrain to your advantage.
Lavish great love and attention on your heavy cavalry. Upgrade their equipment before any other troops. You will probably only have 3 heavy cavalry units, but they can be your knockout punch if you train them right, equip them right, and
use them right.
Heavy cavalry (properly developed) have combat power equal to any heavy infantry. Yet they are far more mobile.
When faced with evil enemy archers, you can often open a hole in the enemy line simply by leaving a gap in your own. The enemy unit which is not facing one of yours will usually "aggro" to one side or the other, leaving a gap. Then one of your heavy cavalry units roars through the gap and nails the archers good.
Always think flanks. If you can't nail the enemy archers via the trick above, find a way to go around. Use waypoints to go around his flank, then come back and do his archers like the monkey did the miller's wife - hard, fast, and from behind.
Heavy cavalry at the charge are very very fast, and capable of executing sweeping manuevers in plenty of time to save the day. Don't be afraid to experiment.
LOL, this post has grown much too long; I'm rambling. I hope some of this helps you, tex
