Unfortunately this was back in 1943
The War and Navy Department at Washington DC issued a "Guide For US Forces Serving In Iraq 1943" which has been re-published with a Preface by Dark House Publications (2008, £4.99). It is in a format, like the original which is easy to slip into a pocket.
Whilst the guide might not be unproblematic, it gives useful advice to troops about "getting along with Iraqis and making them your friends", saying "the best way to get along with people is to understand them. That is what this guide is for".
It is a pity that Bush and his advisers did not study it before the invasion.
Towards the end, the guide gives 28 tips on how to respect and (where appropriate) join-in with Iraqi customs. It concludes with hints on how to pronounce some key Iraqi words and phrases, pressing troops to talk "Arabic if you can to people. No matter how badly you do it." Appropriate recordings were also supplied to help extend their skills in Arabic.
I undertook my National Service in Basra in 1955-6. I would have found a British version of the guide to be invaluable. But never once did Officers in the RAF organise any guidance whatsoever to us on how to mix with Iraqi people and to respect their way of life. We weren't even told where we were at or what we were doing there.
The US also issued "A Soldier's Guide To The Republic Of Iraq" in 2003. I have not yet seen a copy and can only point to this criticism of part of its content. Things seem to have gone downhill since 1943.
I am seeking to discover whether a British version (past or present) exists. I would be grateful for any information on this.