The formation was founded on 5 January 1945, in Italy, as 'B' Assault Brigade RAC/RE. The Brigade Headquarters was formed from redesignting the 25th Army Tank Brigade's headquarters to the 25th Armoured Assault Brigade Royal Engineers. Three months later, on 6 April, the formation was redesignated as the 25th Armoured Engineer Brigade Royal Engineers. The brigade served in Italy until the end of the war.