The boots enhance Advance in Diablo 4 Items several ways:

Bonus Ranks to Advance: Provides three additional skill ranks, boosting the base damage and scaling of Advance.
Damage Multiplier: Increases Advance damage by over 100%, making each strike more impactful.
Double Lunge Distance: Allows Paladins to cover more ground, increasing mobility and tactical positioning.

Additional affixes include:

+Movement Speed
+Chance for Advance to Deal Double Damage
+Cooldown Reduction
+Ranks to Advance

Combined with Basic Skill Aspects like Rapid Aspect, Aspect of the Moonrise, and Aspect of Adaptability, March of the Stalwart Soul enables Advance to clear high-level content comfortably, turning a simple mobility skill into a reliable damage dealer.

March of the Stalwart Soul Unique Effect Explained

March of the Stalwart Soul dramatically transforms Advance into a high-impact skill for endgame content. Its effects include:

Bonus Ranks: Three extra ranks to Advance, amplifying its damage and scaling potential.
Damage Multiplier: Over 100% increased damage to enemies struck, making it highly effective in Torment-level content.
Double Lunge Distance: Extends mobility and allows Paladins to engage or disengage more effectively.

While there is a reported bug where only one of the bonus ranks applies at a time, the boots still offer significant value for Advance-centric builds. The combination of cooldown reduction, movement speed, and chance for cheap d4 mats double damage makes these boots indispensable for maximizing Advance performance.