|The sketch map, derived on the existing
evidence, shows the good defensive location of York. It was in the
interests of the invader to possess the city without the need to assault
||The strength of the city defences raises the
question of why the defenders left them to meet the invaders at Fulford.
The explanation is found in the military tradition of the time. The
assault and capture of burghs was not uncommon. The creation of fortified
strong points had been established by Alfred as part of his administrative
and military reforms to combat the Norse invasions.
The were intended as rallying points and to have a deterrent