From the release:
Amera have designed 2 new 1/72 bases, available separately or as a set.
A Coastal machine gun bunker and Trench complex diorama and a D-Day Sea Assault base. Use to create a detailed D-Day diorama. The bases features a Trobruk type machine gun bunker with connecting trench system and beach, and a sea base.
Stand alone dioramas or to complement the Airfix D-Day Sea Assault base set and Airfix Higgins LCVP Landing craft