mellored
Legend
Yes, but you can only do it for 2 combats at level 5.So essentially at 5th level a sorcerer or wizard or bard can already allow another character to do an off turn reaction attack about every round. The battlemaster can do it about half the rounds of a typical adventuring day at that level.
As much as I dislike that they have done that, there are enough sources to justify a new warlord class getting something similar.
Come to think of it haste does the attack or disengage etc. and extra movement and extra ac all. That spell does almost everything we want our warlord to be able to do!
You can have it "at-will haste" by 11 though. Plus firebolt, shield spells, and whatever else you get (twin, inspiration, extra slots and rituals).
And at level 17, you have foresight.
So maybe grant an attack 3 times per day at level 1. 3 times per short rest at level 5. At-will at level 11. And with advantage at level 17.