Physical description

This is a cloth/linen poster from WW1. In the centre is an image of a British soldier blowing a bugle. Under that are a few music lines with the phrase "Fall in". Further out from the centre are sets of the two British flags with 8 lines of poetry, encouraging men to enlist, and why.
Around the outsides are the flags of various allied nations at the time. (N.B. The US flag is not there which dates the poster around 1914 - 1917).