targets, continuing during the night by observing German gun-flashes. Air reconnaissance during the day, found little movement on the roads and railways behind the German front but the railways at Bapaume were bombed from Flights to Cambrai, Busigny and Etreux later in the day saw no unusual movement and German aircraft attacked the observation aircraft all the way to the targets and back, two Rolands being shot down by the escorts. Bombing had begun the evening before, with a raid on the station at St Saveur by six R.E. 7s of 21 Squadron, whose pilots claimed hits on sheds; a second raid around on 1 July, hit the station and railway lines. Both attacks were escorted and two Fokkers were shot down on the second raid. Railway bombing by each carrying two bombs, began after noon and Cambrai station was hit with seven bombs, for the loss of one aircraft. In the early evening, an ammunition train was bombed on the line between Aubigny-au-Bac and Cambrai and set on fire, the cargo burning and exploding for several hours. Raids on St Quentin and Busigny were reported to be failures by the crews and three aircraft were lost. German prisoners captured by the French army later in July, reported that they were at the station during the bombing, which hit an ammunition shed near wagons. Sixty wagons caught fire and exploded, which destroyed the troop train and two battalions' worth of equipment piled on the platform, killing or wounding after which Reserve Infantry Regiment 71 had to be sent back to re-equip. All corps aircraft carried bombs to attack billets, transport, trenches and artillery-batteries. Offensive sweeps were flown by 27 Squadron and 60 Squadron from but found few German aircraft and only an LVG was forced down. Two sets of patrols were flown, one by 24 Squadron in Airco DH.2s from Péronne to Pys and Gommecourt from to nightfall, which met six German aircraft during the day and forced two down. The second set of patrols by pairs of Royal Aircraft Factory F.E.2bs were made by 22 Squadron between and dusk, from Longueval to Cléry and Douchy to Miraumont. The squadron lost two aircraft and had one damaged but kept German aircraft away from the corps aircraft. 2 July On 2 July, the Fifteenth Wing RFC was formed for the Reserve Army; 4 Squadron and 15 Squadrons, which had been attached