Lengkepan kalimah di handap ieu: 2 CER's lineage is formally traced to 4th Field Company (4 Fd Coy) Royal Australian Engineers, which was raised in the early stages of World War I. Ngaran 7th Field Company (7 Fd Coy) dina taun 1915, unit ieu kasohor jasa na di Perancis jeung Bélgia dina Battle of the Somme, Menin Road jeung dina Hindenburg Line. Salila Perang Dunya II, 7 Fd Coy ngalawan Jepang di
Kokoda jeung Bougainville.