In effort to give the Churchill AVRE greater firepower and range, a 300mm mortar was designed and tested on a Churchill Mk.III.
Engineers' Tanks - British Tanks: 1945 to the Present Day
Ardeer Aggie – the other Churchill AVRE
Churchill Mk. III With 'Ardeer Aggie' Mortar
Tank Archives: Slow and Thick-skinned
Inside the Armour Ardeer Aggie Recoiless Gun Tank 1/35th
Infantry Tank Mk.IV Churchill AVRE
Infantry Tank Mk.IV Churchill Mk.I Amphibious
The Churchill Register
Panzerserra Bunker- Military Scale Models in 1/35 scale: Churchill
Tanks Encyclopedia Weekly Report #15
Churchill tank - Wikipedia
TOG-3, Forgotten Hope Secret Weapon Wiki
Models
Ardeer Aggie - Tank Design & Development
Ardeer Aggie – the other Churchill AVRE