Helpful hint: when inputting army formations, the CODE block is your friend. Edit the layout using a fixed space font (e.g. in wordpad) using spaces, not tabs for alignment, then paste into a code block.

My generic bog standard defensive formation:
Code:
                HI SP SP SP HI 
        HC  LI  AAA AAA AAA AAA  LI  HC 
                 ART   G   ART
Might swap out the Light Inf or the Arty for more archers depending on whats available.