You have picked up a few things in the company of trained warriors and from the stories of mighty heroes. You gain the following benefits:

• You learn two maneuvers of your choice from among those available to the Battle Master archetype in the fighter class. If a maneuver you use requires your target to make a saving throw to resist the maneuver's effects, the saving throw DC is equal to your Bard spell save DC. You don't gain any superiority dice. Instead, you expend a use of your Bardic Inspiration to execute a maneuver, using the die type indicated by your Bard level.
• When an ally inspired by your Bardic Inspiration takes an action that would enable the use of a maneuver you know, you can expend your reaction to allow them to execute that maneuver, using the Bardic Inspiration you granted them as the superiority die for the maneuver. You perform any action the maneuver requires as your entire reaction (such as using a bonus action to move an ally). If the maneuver requires the target to make a saving throw to resist its effects, you use your saving throw DC. 

In addition, each time you gain the Magical Secrets feature of the bard class, you may learn 1 new maneuver instead. At 17th level, once per round, you can roll a d6 in place of expending a use of your Bardic Inspiration to power your maneuvers, but not as part of the special reaction granted to you by this feat.