A British Achilles 17pdr tank destroyer of 93rd Anti-Tank Regiment crossing the River Savio in Italy on a Churchill ARK which was driven into the river, 24 October 1944. - See more at: http://ww2today.com/#sthash.5Dncfpu0.dpuf
AVREs were used to transport fascines - large bundles of wooden sticks and other materials used to bridge gaps in the ground. The AVRE would release the fascine into these gaps to create a passable surface. Tank-carried fascines were first used during the First World War to fill trenches that were either too wide or too deep for vehicles to cross.