From headquarters the day’s shift is sent to the relay station, and from there cars go as needed to the _postes de secours_. The _postes_ are as near the trenches as it is possible for the cars to go, and some can be visited only at night. The wounded are brought to these by the _brancardiers_ through the _boyaux_, or communication trenches, and usually have their first attention here. After first aid has been administered, and when there are enough for a load, or there is a serious case, the car goes to the _triage_, stopping at the relay station, from which a car is sent to the _poste_ to replace the first, which returns to the relay station directly from the hospital. The hospitals also are divided into two main classes, the _triages_, or front hospitals in the zone of fire, and the H.O.E.’s, hospitals of evacuation, anywhere back of the fines. The hospital of evacuation is the third of the four stages through which a wounded man passes. The first is the front-line dressing station, the _abri_; the second, if the wound is at all serious, is the _triage_; the third, if serious enough, is the hospital of evacuation; and the fourth, if the soldier has been confined to the hospital for ten or more days, is the ten-day _permission_ to Paris, Nice, or some other place of his choice. Then these classes, in some cases, are subdivided into separate hospitals for _couchés_, _assis_, and _malades_. These subdivisions sometimes make complications, as in the case of one driver who was given what appeared to be a serious case to take to the _couché_ hospital. While on the way, however, the serious case revived sufficiently to find his canteen. After a few swallows he felt a pleasant warmth within, for French canteens are not filled with water, and sat up better to observe his surroundings and to make uncomplimentary remarks to the driver. Arrived at the hospital, the _brancardiers_ lifted the curtain at the rear of the car, and seeing the patient sitting up and smoking a cigarette, apparently in good health, they refused to take him, and sent the car on to the _assis_ hospital. Overcome by his undue exertion, the wounded man lay down again, and by the time the ambulance had reached the other hospital was peacefully dozing on the floor. The _brancardiers_ shook their heads, and sent the car back to the _couché_ hospital. Somewhat annoyed by this time, the _ambulancier_ did not drive with the same care, and the jolts aroused the incensed _poilu_, who sat up and began to ask personal questions. The driver, not wishing to continue his trips between the two hospitals for the duration of the war, stopped the car outside the _couché_ hospital, and, seeing his patient sitting up, put him definitely to sleep with a tire tool, and sent him in by the uncomplaining _brancardiers_. * * * * *