What did the king known as "Edward Longshanks" and the "Hammer of the Scots" use Greenhill, Evesham for? 
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. Edward I of England: Edward I (17/18 June 1239 – 7 July 1307), also known as Edward Longshanks and the Hammer of the Scots (Latin: "Malleus Scotorum" ), was King of England from 1272 to 1307.
i don't know