Wingover

The maneuver begins by making roughly a quarter loop, bringing the plane up into a vertical or near-vertical climb, allowing the airspeed to drop.

Before the airplane stalls (begins to fall) the pilot applies hard rudder input, bringing the plane into a sweeping, vertical flat-turn, during which the wing swings over the top of the turn toward the direction of the nose.

Because the aircraft does not roll, it also has the advantage of keeping the cockpit facing the same direction during the turn, allowing the pilot to maintain sight of the opponent.

[1] One such maneuver was described by P-47 Thunderbolt pilot Major Robert S. Johnson, in an account of aerial combat during World War II: Habit brought my head swiveling around to look behind me.

When the airspeed is slow enough, the pilot applies hard rudder input with the pedals, bringing the plane into a sweeping flat-turn, as if pivoting on the lower wingtip while the upper wing cartwheels over the top.