 For a time it looked like Rowell would again miss the embarkation of his regiment, but the intervention of his father ensured that he reached Anzac Cove with the 3rd Light Horse on 12 May 1915.He was evacuated sick to Egypt and then Malta in July, and returned to his regiment at Quinn's Post in August.Rowell was promoted to the temporary rank of captain on 9 September, briefly assuming command of a squadron before becoming the regimental adjutant three days later.