the artillery. A revised version of Note 5779 was issued on 20 May by GQG, which asserted that the version of 16 April had been vindicated by events. The new version endorsed "continuous battle" and emphasised that reserves must be pushed forward to avoid the mistake made on 9 May, when they had been held back out of German artillery range. An analysis of German defensive methods, described the use of small numbers of infantry equipped with large numbers of machine-guns, firing from flanks and the sheltering of infantry in deep dug-outs, immune to field artillery; French defensive positions were to be modelled on the German practice. Local attacks were resumed but while modestly successful and remaining within the material constraints on the Tenth Army, were hampered by a drastic loss of experience, caused by the extent of French losses. The tempo of limited attacks was beyond the capacity of the Tenth Army to supply and train replacement soldiers according to the requirements of Note 5779. An attempt to return to larger combined attacks by IX, XXI and XXXIII corps from 25 to 26 May failed in most places, because of increases in the capability of the German defence, the impossibility of obtaining surprise and a lack of time to plan operations or to rest troops. Pétain wrote that German barrages were being fired daily, which made infantry attacks almost impossible and that varying French bombardments to obtain surprise made little difference, now that the German artillery had been reinforced and was ready at a moment's notice to begin barrage fire. German guns were registered on no man's land and had only to fire into the area to hit French infantry during an attack. The French counter-battery effort had to wait until German guns revealed themselves and then begin area fire near the German artillery, which was a waste of ammunition. Pétain wanted more air reconnaissance but aircraft wireless was of extremely short range and during attacks, confusion on the ground made artillery observation from the air impossible. As an alternative, Pétain suggested making highly detailed maps of the German rear areas and systematically bombarding German artillery emplacements continuously, rather than during attacks but the suggestions were impractical, because of the ammunition shortage. Foch and d'Urbal met late on 15 May and ordered that the offensive was to end temporarily, as the attacks after 9 May had been poorly prepared