On the outbreak of war, the CAAOI had of aviation fuel, of bombs and of ammunition. Aircraft and engine maintenance was conducted at the main air bases and at the Caproni and Piaggio workshops, which could repair about fifteen seriously-damaged aircraft and engines each month, along with some moderately and lightly damaged aircraft and could also recycle scarce materials. The Italians had reserves for 75 per cent of their front-line strength but lacked spare parts and many aircraft were cannibalised to keep others operational. The quality of the units varied. The SM.79 was the only modern bomber and the CR.32 fighter was obsolete but the in East Africa had a cadre of highly experienced Spanish Civil War veterans. There was the nucleus of a transport fleet, with nine Savoia-Marchetti S.73, nine Ca.133, six Ca.148 (a lengthened version of the Ca.133) and a Fokker F.VII, which maintained internal communications and carried urgent items and personnel between sectors.