Billy recorded this at a radio interview in Ann Arbor, Michigan, at the suggestion of his new American record label, ANTI, who really liked it when he played it at the South By South West hootenanny.
'Bush War Blues' was recorded at Big Sky Recording in Ann Arbor by Geoff Michael, Gregg Leonard and Chris Duross on 22 March 2006, so it's about as fresh as it could be.
from official website

"Everybody's Gone to War" is a Pop rock song written and recorded by the London-born and Jersey-raised singer-songwriter Nerina Pallot.

The song, an anti-war protest, was written during the early stages of the Iraq War in 2003, and was composed on bass guitar by Pallot. The song was issued on downloads only in March 2005, and the following month saw a commercial release on Pallot's album Fires. The single was also accompanied by the popular music video which features Pallot and other shoppers engaging in a 'food fight' in a busy supermarket. It received heavy rotation on British music channels with many people praising the humorous setting, however depicting a darker message within. It was directed by Marc Klasfeld. - en.wikipedia