At night, movements of large forces raised very little dust, and it was very difficult to recognise movement from the air, "except in the case of a close formation marching along a road and interrupting the white line of road."
Om natten støvede det ikke ret meget når store troppestyrker var i bevægelse, og det var meget vanskeligt at opdage bevægelser fra luften, "bortset fra når en tæt formation marcherede langs en vej og afbrød vejens hvide linje".