LINES OF COMMUNICATION Everything goes forward without noise, haste, or delay. The big bags crammed with letters arrive from England in their thousands and soldiers that were sorters in peace-time and are sorters still, get to work on them immediately. The pigeon-holes follow the arms: Infantry, Artillery, Engineers, R.A.S.C., Headquarters: and then the units: battalions, batteries, columns. Sorting into divisions and sectors, which must be kept secret, is not done until later, and then by other men. If a battalion moves, a coded telegram advises the Base Post Office. T)o many letters remain undelivered?' I asked. *No, very few. As you can see, it only needs one man in that quite small corner to classify them. While there remains the slightest chance of finding the addressee, we keep searching. .. . You've only to look at this envelope, which has been covered with so many corrections and remarks that we've had to stick a piece of paper on it to cope with them all. When every possibility has been exhausted, the letter is returned: but it doesn't happen very often/ *And censorship?' 'Well, you know that contrary to the practice of the French army, all the men's letters are censored by their own officers. But if a soldier wants to write things which he'd rather not have read by his direct chief, he is entitled to use a special green envelope which is given him for the purpose, and to seal it. 129 x