Mandatory equipment is head protection (iron helmet with padding or sabre fencing mask), and protection of hands and torso.
march within the formation
loose linear formation of shields - edge to edge
tight linear formation of shields - edge to umbo
diagonal line
wedge
circle
changing first two fighter rows during fight (fighter rotation) in loose formation
tactics of first row fight
cooperation of first row fighters in linear formation
cooperation between first and second row in linear formation
usage of axes and spears to disband opposing formation