The First Battle of Dernancourt was fought on 28 March 1918 near Dernancourt in northern France during World War I. It involved a force of the German 2nd Army attacking elements of the VII Corps, which included British and Australian troops, and resulted in a complete defeat of the German assault.

The 47th Battalion was an infantry battalion of the Australian Army. It was originally raised in 1916 for service during the First World War. The battalion then took part in the fighting in the trenches of the Western Front in France and Belgium, before being disbanded in early 1918 to provide reinforcements for other Australian units that were suffering from a manpower shortage following the German spring offensive. In 1921, it was re-raised as a part-time unit of the Citizens Force, which later became the Militia. During this time it was based in south-east Queensland and in 1927 it became known as the "Wide Bay Regiment". During the Second World War the 47th Battalion took part in fighting in New Guinea and Bougainville, before being disbanded again in January 1946. Later, the battalion was re-raised before eventually being subsumed into the Royal Queensland Regiment in 1960.