A road block is a tiny batt lefi eld. Here, all the principles of strategy and tactics apply – just as much as when whole armies meet in the f i eld. It is a challenge thrown down by the free world to Hitler and his hordes. A road block is a gesture of defi ance that says, ‘Beyond this, you shall not come’. Lie doggo. Hit hard. And clear out! Road Blocks is one of a series of training books writt en in 1942 by Colonel G. A. Wade for the newly-recruited Home Guard. This reproduction from 7786’ archive shows how the Second World War trainees learnt to set up and defend road blocks amidst the threat of enemy invasion.