Two mounds on Leith Links, known as "Giant's Brae" and "Lady Fyfe's Brae", identified as Somerset's Battery and Pelham's Battery respectively, are believed to be artillery mounds created for the siege in April 1560 and are listed as scheduled monuments, but may be natural hillocks. The best documented day of the siege was 7 May 1560, when the English and Scots charged the walls of Leith with ladders that turned out to be too short. John Knox records the delight of Mary of Guise at the failure of the attack, and English sources report 1000 casualties.