On December 18th Sarrail again called on Petitti at the hospital, and asked him to choose his own sector himself, undertaking to place at his disposal two groups of 75 mm. batteries and the medium calibre artillery which happened to be already in the sector chosen, and to leave the division which the 35th was about to relieve in its immediate rear, unless and until it became necessary to employ it elsewhere owing to exceptional circumstances. Subsequently General Petitti, who was now recovered, went to Florina, and, by agreement with General Leblois, the new Commander of the A.F.O. who had relieved General Cordonnier, he chose the western part of the Cerna loop, from Novak to Makovo as his sector, and this arrangement was approved by General Sarrail. Our division relieved one and a half French divisions and one Serbian division. As the whole of the 35th Division would now be supported on either side by troops of the A.F.O., Petitti himself proposed that he should be placed tactically under the orders of the Command of the latter. During the month of December the whole expeditionary force was concentrated in its new sector in the Cerna loop (except of course the base units at Salonica and the L.O.C. detachments), and there it remained until September 1918, save for a few slight rectifications of the line. After the occupation of Monastir, the distribution of the Allied forces was stabilized as follows. From Ersek, where a liaison had been effected with our Albanian force (I shall deal later with the relations between the armies in Macedonia and those in Albania) to the eastern arm of the Cerna, the line was held by the A.F.O. The latter now comprised seven French divisions, viz. the 30th, the 57th, the 76th, the 156th, and the 11th Colonial, the two Russian brigades, the 35th Italian, the 16th and 17th French Colonial Divisions. Of the two Russian brigades which were for a short time in the Cerna loop, one was soon afterwards transferred to the lake of Presba and the other to the east of the Cerna. Later, when they were amalgamated into one division, they were concentrated in the Presba area, where they remained until their final break up. The 16th and 17th Colonial Divisions were on our right in the Cerna loop. Between the Cerna and a point near Nonte there were the three Serbian armies, afterwards reduced to two. The line between Nonte and the Vardar was held by the 122nd French Division, subsequently strengthened by one, later on by two, and finally by three Greek divisions. The A.F.O. was divided into two “_groupements de divisions_” (corresponding to army corps), one between the Cerna and Albania, one in the Cerna loop (comprising the Italian troops); the 122nd Division with the Greek forces afterwards added to it formed the “_1er groupement_.” Between the Vardar and the mouth of the Struma in the Gulf of Orfano was the British area--the XII Corps (10th, 22nd and 26th Divisions) from the Vardar to lake Butkova, and the XVI Corps