Is that Guinnes -craving stormtrooper a reference to DeValera and WWII propaganda? Did the Irish betray their former English oppressors at a moment of mortal danger while the British stood alone against the Facist menace? That certainly is an understandable interpretation of these events ... if considered from a certain viewpoint. If however, one includes in his perspective the history of 19th century British misrule over Ireland; or the history of the destabilization of the Middle East done by Britain and France (with some help from Russia) during WWI along with exciting the desire in Japan for a Pacific Empire also done by Britain during that period; and the history of the vindictive Treaty ending WWI and the supine accomodation to the rising Nazi reaction to it that followed during the early 1930s .... one can find himself with a different point of view.
I'm not casting blame here: merely noting that perspective can be the real decisive issue in such matters.
There are multiple perspectives on many things in the world, including The efficacy (or lack of it depending on your viewpoint) of American policy in maintaining stability in the interregnum between WWII and the fall of the Soviet empire; our wise (and unwise) actions after that collapse; the efficacy of the British empire in maintaining world-wide stability (or protecting its self-interest, (again depending on your viewpoint) between 1813 and WWI ..... and so on.
You should know that my father, himself an Irish immigrant from Ennis, who came here as a young man after the Irish Civil war, got himself elected to the U.S. Congress in his early 30s and voted against Lend Lease. This issue and the struggle over post WWII empire that culminated at the Breton Woods Conference and the clash, between the pretentious and aristocratic John Maynard Keynes and Harry Dexter White, an American middle class Jew with likely communist sympathies, over the post war monetary system, also involved different points of view. --- as has the long history of relations between the United States and the British Empire, now UK involved some persistent differences in point of view.
I think it is important to understand this dimension of public events and indeed human history. The world and human behavior are complex things,.... far more complex than the relatively trivial theories and story lines we humans create largely to justify what we have done and what we want. I believe a fundamental component of wisdom is the willingness to see and consider the influence of nperspective on such issues. It can be uncomfortable for us all to do so, and the unpleasant fact is that we all stand closer to hypocrisy than we usually care to admit.