During World War One, Britain and its empire mobilised soldiers on a hitherto unprecedented scale. That required a huge logistical effort to feed, equip, house and train them. No place reflects these efforts better than Salisbury Plains. Now mainly sleepy villages and farmland, these plains were once home to tens of thousands of men and women who descended on the camps to prepare for war. In this episode historian Margaret McKenzie, who spent the last 30 years studying the camps, takes Dan on a tour of the site helping understand the scale of what once stood there. Margaret sadly passed away a few weeks ago, so this episode is dedicated to her and all those who served at the camps with which she became so familiar through her research.