The Sentinel Guard were the defensive formation of the Custodes, designed to function as a mobile bulwark to protect emissaries or other important targets against enemy attack. In order to achieve this they were most typically equipped with powerful Praesidium Shields and Sentinel Blades. Due to this role, the Sentinel Guard displayed a level of teamwork, coordination, and synchronicity that was unseen by the rest of the Custodes.
|Command||Captain-General • Custodian Tribunate • Shield-Captain|
|Elites||Hetaeron Guard • Aquilon Terminator • Ephoroi • Allarus Custodian • Custodian Warden • Vexilus Praetor|
|Troops||Custodian Guard • Sentinel Guard • Sagittarum Guard|
|Fast Attack||Agamatus Jetbike Squadron • Vertus Praetor • Venetari|
|Dreadnoughts||Contemptor • Contemptor-Galatus • Contemptor-Achillus • Telemon|
|Vehicles||Coronus • Caladius • Pallas • Venerable Land Raider • Rhino • Grav-Rhino • Grav-Raider • Grav-Spartan|
|Aircraft||Stormbird • Orion • Ares • Aquila Lander • Talion • Equinox Interceptor • Zenith|