 Complete the following phrase:  He joined a directly active unit in 1941 when he was appointed Colonel and Assistant Director Medical Services, 10th Indian Infantry Division around its formation. An Assistant Director was head of the medical services for a Division. The Division was commanded by Maj-Gen.Bill Slim and at that time it landed in Basra, captured Baghdad and the oilfields of Mosul as part of the Anglo-Iraqi War which was linked to World War II. The division then invaded Syria in pursuit of Vichy French aeroplanes placed there by the Germans until June, then invaded Iran as part of the 