The communications of the Allies were as follows: (1) The railway from Salonica to Monastir, which operated as far as Armenohor (Florina) for troops and to Sakulevo for goods; occasionally a train went into Monastir at night, but the last section of the line was still under enemy fire. (2) The Vardar railway from Salonica to a point south of Ghevgheli. (3) The Constantinople railway from Salonica to Lake Doiran; the section from Doiran to the Demir Hissar bridge (blown up by the French in 1916) was between the British and Bulgarian lines and therefore useless. (4) The branch line between Karasuli on N 2 and Kilindir on N 3. (5) A short branch line built by the British during the war, from Salonica to Guvesne on the Serres road. (6) The line from the station of Salonica across the town to Mikra Bay. There were many décauvilles, some of them very long, which rendered most valuable services. The following were the most important: Florina-Armensko (in the direction of Albania) unfinished, but continued with a telepheric to the Pisoderi Pass; Sakulevo-Brod with an extension towards the Italian front and another towards that of the I Serbian Army; Vertekop (on the Monastir railway) to the II Serbian Army front; Sarigöl-Janesh, with branches towards the British XII Corps front; several along the Struma, north-west of Lake Tahinos; one from Arakli to the British trenches beyond the Struma, south of that lake. Many excellent roads had been built throughout the _Zone des Armées_, except in the Franco-Albanian area and in that of the II Serbian Army, where communications were very deficient, owing to the extremely broken nature of the ground, but in the latter area several new roads had been built, as we have seen, in view of the coming offensive.