military historians have also suggested that the scots, particularly under william wallace and robert the bruce, consciously imitated the hellenistic phalanx to produce the scots 'hedgehog' or schiltron. however, this ignores possible early middle ages use of long spears by picts and others in scotland. it is possible that long spear tactics (also found in north wales) were an established part of more irregular warfare in parts of britain prior to 1066. the scots certainly used imported french pikes and dynamic tactics at the battle of flodden. however, this battle found the scots pitted against effective light artillery and advancing over bad ground, which disorganised the scottish phalanxes and left them easy prey to english longbow shooting and attacks by shorter but more effective english polearms called bills. some have interpreted contemporary sources as describing the bills cutting off the heads of scots pikes.