Question: What did the king known as "Edward Longshanks" and the "Hammer of the Scots" use Greenhill, Evesham for? 
Sentence (from "Greenhill, Evesham"): King Henry's son, Prince Edward, later Edward I used it as his base in the battle from where he launched his attack on Simon de Montfort's forces which were gathered around Evesham Abbey.
Relevant evidence: Yes