EC0206
The Great War of 1862 was the global escalation of several wars, in both Europe and the Americas. The war soon expanded to involve European, American and Asian nations and be fought also in Africa and Australesia.
No information on author online, but poem was published in 1870 issue of The South Australian Adverstiser under alternate title, "The Two Flags" - http://trove.nla.gov.au/ndp/del/article/28593461