the Syrian border from Palestine and take Quneitra and Deraa. This was anticipated to open the way for the 1st Free French Division to advance to Damascus. Four days after the commencement of the operation, the force was brought under unified command and was named Gentforce after its French commander, Major-General Paul Louis Le Gentilhomme. The 7th Australian Division (Major-General John Lavarack, succeeded by Major-General Arthur "Tubby" Allen on 18 June when Lavarack took over Australian I Corps) advanced from Palestine along the coastal road from Haifa towards Beirut. The Australian 21st Brigade was to take Beirut, advancing along the coast from Tyre, over the Litani River towards Sidon. The Australian 25th Brigade was to attack the large Vichy French airbase at Rayak by advancing along a route further inland from the 21st Brigade. The operation was also to include a supporting commando landing from Cyprus at the south of the Litani River. Once the two southern prongs were well engaged, a third force if formations drawn from Iraq Command, was planned to invade Syria. The bulk of the 10th Indian Infantry Division (Major-General William "Bill" Slim) was to advance north-west, up the Euphrates River from Haditha in Iraq (upstream from Baghdad), toward Deir ez Zor and thence to Raqqa and Aleppo. The manoeuvre was intended to threaten the communication and supply lines of Vichy forces defending Beirut from the Australians advancing from the south, particularly the railway line running northwards through Aleppo to Turkey, which was thought by some British strategists to be sympathetic to Vichy and Germany. A group of two infantry battalions from the 20th Indian Infantry Brigade (10th Indian Division) and two from the 17th Indian Infantry Brigade (8th Indian Infantry Division) would operate independently to capture all the territory in north-eastern Syria. The 20th Indian Infantry Brigade were to make a feint from Mosul, and the 17th Indian Infantry Brigade would advance into the Bec du Canard (Duck's Bill) region, through which a railway from Aleppo ran eastward to Mosul and Baghdad. Habforce was in Iraq attached to Iraq Command because it had struck across the desert from the Transjordan border as part of the relief of RAF Habbaniya during the Anglo-Iraqi War. Habforce consisted of the 4th Cavalry Brigade, the 1st Battalion, Essex Regiment and the Arab Legion Mechanized Regiment supported by field, anti-tank and anti-aircraft artillery units, to gather in western Iraq between