I think I remember from the Silmarilion a phrase something like this.... the armies of Gondolin (?) marched in good order, well armoured, with tall helms and kite shields (?), and then something like a 'forest of spears', which might suggest a phalanx, but nothing too far away from the current High elven army though, I just don't have my copy of the silmarilion here... I would like to see more AOR units for the elves, variety is always good IMHO...