 Parker, mumwe wevana vasere, akaronga kuti asati arwa hondo aite basa rokudhinda mifananidzo muSydney asi akaregwa paakanyoresa muAustralia Imperial Force AIF ava nemakore 20. Baba vake vakanga vasaina kunyoresa kwake pamutemo wekuti aisazotumirwa kuNew Guinea, sezvo aitya marariya Parker uyo pakutanga akafunga kuti aizotumirwa kuEngland akasvika paHondo yeGallipoli munaNovember 1915 ne20th Battalion, 4th Reinforcements. Akapiwa basa rokutakura zvombo nemvura achipfuura nemumigero achienda kunzvimbo yairwiwa hondo. Pashure pokubviswa kwake muTurkey, akarwa muFrance. Akapfurwa muruoko paPozières; uye akabva aendeswa kuEngland. 