British forces in reserve included the 6th Infantry Division (with the Czechoslovak 11th Infantry Battalion–East attached to the 23rd Infantry Brigade) and the 17th Australian Brigade. In mid-June, the division with its two infantry brigades came into the line as reinforcements, mainly on the Damascus front, and the southern force was placed under the command of the 1st Australian Corps on 19 June. At the beginning of Operation Exporter, the British and Commonwealth force consisted of about and . The RAF and RAAF had about 50 aircraft, and the navy contributed the landing ship , five cruisers and eight destroyers.