Brawler are Shock troopers. Useful in oh so many ways...
Apaches are reconnaissance among other things.
On the other hand, M2 Bradleys exist in the Cavalry Squadron of any Brigade and are task organized to maneuver BNs or act as a single cohesive unit. However, the Cav Sqdn can dump the Bradleys for medium lift capable HMMWVs to provide light wheeled cavalry on an objective area (Air mobile by Blackhawk or CH-47).
Brawler is Cavalry. Heavy Cavalry when mounted on M2s.
From wikipedia
"In many modern armies, the term cavalry is still often used to refer to units that are a combat arm of the armed forces which in the past filled the traditional horse-borne land combat light cavalry roles. These include scouting, skirmishing with enemy reconnaissance elements to deny them knowledge of own disposition of troops, forward security, offensive reconnaissance by combat, defensive screening of friendly forces during retrograde movement, retreat, restoration of command and control, deception, battle handover and passage of lines, relief in place, linkup, breakout operations, and raiding. The shock role, traditionally filled by heavy cavalry, is generally filled by units with the "armored" designation."