Back to Back

You excel at watching your allies' backs and helping them watch yours. Any ally adjacent to you can't be off-guard due to flanking unless you're also flanked. Similarly, while you're adjacent to at least one ally, you can't be off-guard due to flanking unless at least one ally you're adjacent to is flanked as well. With a resounding cry, you rally your ally to take the offensive. Choose one ally in your marshal's aura who has a reaction available. If you spend 1 action, that ally can use their reaction to immediately Stride. If you spend 2 actions, that ally can use their reaction to immediately Strike.