Many Imperial strategists believe the Bastion Platoon to be the mainstay of the Astra Militarum fighting force. A combined arms formation of infantry and supporting armour, a Bastion Platoon can break wave after wave of enemy assaults with withering lasgun, heavy weapon and artillery fire.

Hold the line with an Astra Militarum Bastion Platoon – a solid core of infantry units and support vehicles. It features several units that are ideal for inclusion in any Astra Militarum force, whether you're starting a a new army or adding to an existing one, all for less than you’d pay getting the models separately.

The set includes the following multipart plastic units:

- 1 Cadian Command Squad (5 miniatures, each supplied with a Citadel 25mm Round Base)
- 20 Cadian Shock Troops (20 miniatures, each supplied with a Citadel 25mm Round Base)
- 3 Cadian Heavy Weapon Teams (3 miniatures, each supplied with a Citadel 60mm Round Base)
- 1 Sentinel (supplied with a Citadel 60mm Round Base, can instead be assembled as a Scout Sentinel)
- 1 Chimera
- 1 Hydra (can instead be assembled as a Wyvern)

This set is also supplied with an Astra Militarum Cadian Transfer Sheet and two Astra Militarum Tank Transfer Sheets.