Well-versed in repelling attackers, you gain the following benefits.
Siege Stance
If you end your turn and haven't moved during the current turn, you have Advantage on readied attacks and Opportunity Attacks until the start of your next turn.
Tight Formation
While you are within 5 feet of two or more allies that don't have the Incapacitated condition, enemies can't have Advantage on attack rolls against you.