Roman Legion composition?

[Lanceari]

Not sure if anybody still cares... this is how i make my Polybian army...:

Most of the time I keep a large contingent of local inexpensive troops... since I can replace casualties locally.

However, I tend to have more than the historical share of triariis. I use triariis as a second (or third) line for both form my legionaries and my locally raised units.

During the Camillian Period I tend to recruit a lot of Roariis together with a lot of Triariis. By the time I reach Polybian I tend to have a lot of experienced Camillian Triariis which I use as a third line. (During the Polybian period I keep the old Camillian Roariis as a police force in cities and road crossing.)

I also tend to recruit mercenary archers (either horse archers or cretan archers). If storming a city, I will always have a few cretan archers mercenaries at hand. Out in the open, whenever possible I will have some horse archer mercenaries.

My stack will look something like this:

For cities without stone walls: 4 mercenary archers (cretan if possible), 4 local light infantry, 4 legionaries, 6 triariis, 1 general, 1 cavalry (preferably missile cavalry)

For cities with stone walls: 4 cretan archers, 6 pedites, 8 triariis, 1 general, 1 cavalry, (preferably missile cavalry). (This is the one exception to my rule to use locally raised units. I use pedites for wall fighting whenever possible.

Out in the open (flat terrain without woods): 2 local skirmishers, 4 local light infantry, 2 legionaries, 6 triariis, 1 general, 4 horse archer mercenaries or other missile cavalry, 1 shock cavalry.

In the woods: Mostly local skirmishers and local light infantry. A few triarris or legionariis to cover any place in the line where I fear a rout could occur. Little cavalry, but always keep one general.

In the mountains: More light infantry and missile units, less trairiis and less cavalry... but always keep one general.