Firstly I accept that I am going to labelled a first class anorak with this post. Declaring you have an interest in pillboxes is bad enough but tractors etc?? Anyway the reason for this post follows on from my visit to the TNA last week - highly successful with the highlight being the potential matching of many earthworks I found last winter to a training exercise held in 1943 (that's for future posts though!). Anyway back to tractors - in one War Diary of Engineers involved firstly in the constrcution of anti-tank ditches on the GHQ line in Essex, before moving to Suffolk, a list of mechanical equipment was given. So I thought this post (and one or two subsequent) may be of interest to give a flavour of the machinery used to construct the anti-invasion defences in Britain. This is part 1 - the D4 and D8 tractor. No 2 section 135 Mechanical Engineers commenced work on the GHQ Line in Essex on June 18th 1940 with: 2 RB19 Dragline 5 RB10 Dragline 1 1/14 Smith Shovel 1 D8 tracto...