IRA, Iraq, Iran, IRS--do I detect a pattern here? I've even been at war with my cousin Ira (the putz) for years.
...and Prior to that...since the 1950..Malaya, South Arabia, Oman, Yemen and then IRA...has much more experience than Delta Force (it was started in the early '60s)...excellent book Tom Geraghty's Inside the S.A.S.