Getting off the original subject a bit, but my understanding is that "Hooker" from the Dutch "hoeker" as described by Martin, like "Scow" from the Dutch "schouw" a flat bottomed coater built for estuary work and typically loaded over the side once the tide had fallen and the ship,was grounded (Incidentally these were in use in New Zealand into the sixties); and "Lugger" from the lugsail rig, all originally refered to a specific design of small costal craft or rig, and are now frequently used as terms of, sometimes semi affectionate, derision. I assume that this arose from the deep water sailors sense of superiority over the small costal craft.

Back to the song, "when this bloody war is over" is to the tune commonly used for the hymn "What a freind we have in Jesus" and thus dioubly offended the self righteous amongst the civilian population when sung during WW1(which no doubt added to its popularity amonst squaddies) . It has existed in the oral tradition in the UK at least since then, but became more widely known and sung as a result of its inclusion initially in the program on the songs and music of WWI in the BBC series to mark the wars fiftieth anniversary, and secondly in the show and film "Oh what a lovely war".