VIKING'S All of the sites I have collected to date.

IRELAND Next on my list

IRISH/VIKING Where they meet and mix

SIEGE 
Medieval Armies and Navies 
Balance Throwing, Siege Machines of the Middle Ages 
Experimental Reconstruction of a Medieval Trébuchet

FIGHTING
Women as Warriors in History
Viking Fighting Notes from 23 Sagas 
Lothene Experimental Archeology

Medieval Life
Medieval Women