Due to the great synergy with Blitzkrieg Doctrine, Tier 3 (Assault Phase) is heavily used with Stormtroopers. The Armory grants them the MP44 Sturmgewehr Rifles upgrade, which can decimate infantry in a close-up battle. Stormtroopers provide improved anti-infantry capabilities over the T2 Grenadiers Squads for only a modest increase in cost while retaining the AT (Anti-Tank) capability with Panzerschrecks. Finally, Stormtroopers add on two useful abilities: camo, and bundled grenades. The StuG IV is used as a portable PaK 38 and the Nebelwerfers can decimate infantry 'blobs' with their long range and incendiary capabilities. Overall, their units make the Tier 2 Krieg Barracks redundant, as Storm troopers replace Grenadiers, StuGs replace Paks and StuHs replace Mortars.
Even for non-Blitzkrieg strategies, a Puma Armored Car rush can be a potent strategy. They are fast and capable of quickly destroying Allied infantry to deny the enemy capture opportunities. They are easily capable of flanking US AT Guns and force them to spend fuel producing their own vehicle force, such as the M8 Armored Car or T17 Armored Car.