The name "Ewan McColl" [sic] is given also at the end of the lyrics of "The Second Front Song" in Martin Page, Kiss Me Goodnight, Sergeant Major (Panther, 1973, p. 146)[MartinRyan's original], but MacColl says in notes to Bundook Ballads: Ewan MacColl (Topic 12T 130):

THE SECOND FRONT SONG By 1944 a good deal of hostility had arisen between British troops and American soldiers based in the British Isles. A good deal of this was the result of the difference in spending power between the troops of the two nations. Although the tune is well known in Scotland under the title of Musselborough Fair, the song is said to be the work of a group of English soldiers serving in a regiment of The Black Watch. By 1945 the song had become a signal for a free fight and it was consequently outlawed in all pubs patronised by troops. On V.E. night, a riot was narrowly averted in Leeds, Yorkshire, when troops numbering more than a thousand defied the authorities by singing it in the civic centre.

And, according to Ewan MacColl: songmaker (Introduction to The Essential Ewan MacColl by Peggy Seeger),

"He was a contortionist in some cases and, for reasons best known to himself, often did not claim authorship of certain songs which family and friends know are unarguably his." Ivor", "The Second Front Song", "Browned Off' are three that spring immediately to mind. Of course, it is possible that he wrote them with other people. But when he sang them onstage, he would never say whose songs they were or where he had learned them (a sure sign with Ewan, for he would always credit the maker if he knew who it was. And his memory was infallible). He would rarely say, onstage, 'This is a song I wrote' or 'This is one of my songs'. "

~Masato