The Army and Navy air services established themselves in Britain under the command of the Joint Chiefs of Staff. Norwegian air and ground crews operated as part of the British Royal Air Force, in both wholly Norwegian squadrons and also in other squadrons and units such as RAF Ferry Command and RAF Bomber Command. In particular, Norwegian personnel operated two squadrons of Supermarine Spitfires: RAF 132 (Norwegian) Wing consisted of No. 331 (Norwegian) Squadron and RAF No. 332 (Norwegian) Squadron. Both planes and running costs were financed by the exiled Norwegian government.