Sentinel - Notable Sentinel Patterns: There are several different patterns of Sentinel depending on their Astra Militarum Militarum Regimento of origin, which further specialises one of the primary operational roles outlined above depending on local circumstances, tactical needs and military cultures.Armageddon Pattern - The Armageddon Pattern Sentinel is armed with a Lascannon, one of the most effective anti-tank weapons the Imperial Guard possesses, and this pattern is used in a very effect anti-armour role. The canopy is also fully enclosed with armour plating.Cadian Pattern - The Cadian Pattern Sentinel is armed with an Autocannon which is effective against more "elite" armoured infantry units and standard vehicles. Its canopy is fully enclosed and armoured.Catachan Pattern - The Catachan Pattern Sentinel is armed with a Heavy Flamer and Sentinel-sized chainsword for use in the dense jungles of the Death World of Catachan and planets with similar tropical environments. This pattern is both highly effective at clearing a path through heavy jungle terrain as well as decimating lightly armoured troops. In accordance with Catachan Jungle Fighters combat doctrine, most Catachan Pattern Sentinels are extremely well camouflaged. The canopy of the Catachan Sentinel is only partially armoured, but it is covered in camouflaged netting in order to better blend in with its surroundings.Elysian Pattern - The Elysian Pattern Sentinel is armed with either a Multi-melta or a Heavy Bolter. The Multi-melta variant is used by the regiments of the Elysian Drop Troops as a substitute for more heavily armed and armored vehicles such as the Leman Russ main battle tank that is not used by the Elysians in their role as light infantry. The Elysian Pattern Sentinel's main weapon is extremely effective against even the most heavily armoured vehicles. The Heavy Bolter variant of this pattern is used to mow down densely-packed infantry formations, and is vital to the Elysians when they are operating against a larger force of infantry. Both variants of this pattern have been modified to fit inside a Valkyrie and are fitted with Grav-Chutes, so they can be "parachuted" into combat alongside Elysian troops as the engines and canopy of this Sentinel has been downsized in order to fit inside of a Valkyrie. The canopy is only partially armoured.Mars Pattern - The Mars Pattern Sentinel is armed with a Multi-Laser which is effective against infantry formations and lightly armored vehicles. This pattern uses a partially armoured canopy.Praetorian Pattern - The Praetorian Pattern Sentinel is quite a different beast compared to its brethren. The main differences include the removal of almost the entire canopy and a simpler walking mechanism. The legs of the Praetorian Pattern have one less knee joint compared to other patterns of Sentinel and are covered in thick armour plate. This is in accordance with Praetorian Guard combat doctrine, which is heavily focused around lines of infantry, in countless ranks, firing lasguns in massed volleys, supported by heavy weapons teams. The Praetorian Pattern Sentinel complements this strategy by acting as a mobile heavy weapon team, rather than a fast attack or reconnaissance vehicle as is more common among other Imperial Guard Militarum Regimentos. This pattern has been known to mount Punisher Assault Cannons as its primary armament.Tallarn Pattern - The Tallarn Pattern Sentinel is armed with a Multi-Laser. It has larger feet than the other Sentinel patterns to provide better balance on the loose sand of the battle zones it is used in. It normally is manufactured with only a partially armoured canopy because of the high heat experienced in Tallarn's desolate, desert environments.