légère de transport de personnel, an armoured personnel carrier capable of transporting four to five infantrymen and having a crew of two and a 19 CV engine. As there was an insufficient budget to equip even a limited part of the Infantry with fully tracked vehicles this plan was abandoned, but on 20 March 1933 Renault received an order from the STMAC (Section Technique des Matériels Automobiles de Combat) to develop a prototype of a different design discussed with Weygand: a command vehicle corresponding to the specifications of 9 January 1931 for a so-called Type M. In September 1933 two prototypes were presented in Mailly, which were rebuilt with a more powerful 22 CV engine in 1934. In January of that year it had been decided to order ten of these, but to use the chassis of the AMR 35 instead. The second prototype would be used in the autumn of 1936 to develop the Renault YS artillery observation vehicle, the production vehicles of which would however also be based on the AMR 35 chassis. Engin P On 9 January 1931 the French Artillery officially issued the specifications for a Type P, which was to be a véhicule antichar, a self-propelled antitank-gun, that was to serve in the Maginot Line as a tank destroyer. On that date Renault, who had been informed of the plans about a year earlier, had already begun to develop a prototype. The first plans foresaw a very small tracked vehicle, a chenillette, weighing no more than 1.5 metric tonnes, on which a 25 mm antitank-gun was to be mounted on a tripod in an open position. The gun would have to be removable, so that it also could be placed on the ground after having been transported by the vehicle. However, the same year it was decided to let the 25 mm gun be towed by the Renault UE chenillette, making the Type P redundant in its original scope. The Artillery therefore decided to mount, under armour, a much more powerful 37 mm Modèle 1934 fortress gun with a muzzle velocity of 860 m/s, which yet had to be developed by the Atelier de Puteaux, the State armament arsenal. In 1932 Renault delivered a prototype, a specially built chassis (N° 81805), that in general form resembled the standard AMR 33. A turret was absent however, and the hull roof had been raised. In the middle