After Aden, he was promoted to command 11th Armoured Brigade in the British Army of the Rhine, a post he held from 1968 until 1970, and then attended the Royal College of Defence Studies in 1971. In 1972, he was appointed major-general and seconded to Oman, where he acted as Commander of the Sultan's Armed Forces. The new Sultan, Qaboos bin Said, had been trained at Sandhurst and served in the British Army, and as part of the revitalisation of his forces during the Dhofar Rebellion he requested a large number of British military advisors. Creasey's period in Oman was effective; he quickly established a centralised command of the Army, and helped take the initiative against the Dhofari rebels. His previous experience with the Indian Army proved an asset, as a sizeable proportion of the Omani army was made up of Baluchis. He left in February 1975, with the campaign winding down. After a brief spell as Director of Infantry, he was appointed on 1 November 1977 to succeed Sir David House as General Officer Commanding in Northern Ireland. His experience as a commander had largely been in small-scale "colonial wars", and as such he was a contentious choice for the position. He aimed to get quick results, and his belief that a military solution could be found to the problem put him at odds with the commander of the Royal Ulster Constabulary, Sir Kenneth Newman. This dispute peaked in 1979, after 18 soldiers were killed in the Warrenpoint ambush, when Creasey demanded the Army take over control of policing. However, he had a good working relationship with Roy Mason, the Secretary of State for Northern Ireland. He was replaced as commander by Lieutenant-General Sir Richard Lawson on 1 December 1979. He was appointed as Commander-in-Chief, UK Land Forces in 1980, but left this shortly thereafter to return to Oman, at the personal request of the Sultan. Creasey had waived retirement to become Deputy Commander-in-Chief and Chief of Defence Staff, in the Sultan of Oman's Armed Forces in 1981, and oversaw a far-reaching reform of the Ministry of Defence and a modernisation of the army. Among other features, the redesigned system gave him complete control of arms procurement, which with the approval of the Sultan, ensured that many contracts went to British firms. Perhaps unsurprisingly, his role in Oman was controversial in the country, with many senior Omanis criticising his methods. , Essex