The stance serves recoil control
Where the grip controls the gun in your hands, the stance puts your whole body behind it so recoil drives into a stable, forward-leaning platform and the pistol returns to target on its own. A pistol fired from a passive, upright, or backward-leaning posture flips up and recovers slowly; the same pistol fired from an aggressive athletic stance recoils flat and snaps back, ready for the next shot. Stance is recoil management with your body.
The athletic stance
The modern default is an athletic, slightly aggressive stance (a forward-weighted isosceles): feet about shoulder-width with the support-side foot slightly forward, knees softly bent, weight forward on the balls of the feet, hips and shoulders squared to the target, and a distinct forward lean from the waist — "nose over toes." Your arms extend the pistol toward the target, firm but not locked rigid (a slight bend absorbs recoil better than rigidly locked elbows). The shoulders roll slightly forward and down. This is the same athletic platform taught for the carbine, and for the same reason: it puts your mass behind the gun and keeps you balanced and mobile.
Squared vs. bladed: two schools, one modern default
Pistol stance has two competing schools of thought, and it's worth knowing both rather than assuming there's only one right way. The squared isosceles taught here — hips and shoulders squared to the target — is the modern default: it's simpler to teach and index consistently under stress, and, if it matters to you, it presents body armor's largest protected panel toward the threat. The older bladed/Weaver-style stance — support-side foot forward, body angled rather than squared, closer to a boxer's guard — braces more directly against a straight-on push and can be quicker to move off of, but it opens the support-side hip and is a less consistent index for most shooters to return to, shot after shot. Neither is simply wrong; squared isosceles is recommended here because it's more teachable and repeatable for most shooters, not because the bladed stance's bracing advantage is imaginary. Know the trade-off you're making, not just the stance you're taught.
The same forward-weighted, knees-bent structure that controls recoil on a static range is also what lets you move. Shooting on the move, transitioning to cover, and repositioning all start from an athletic, weight-forward base, not a flat-footed one — a stance built only to look good on a square range target is a stance you can't do much else from.
The recoil path
When the pistol fires, recoil travels back through your extended arms into your shoulders and down into your forward-leaning body and braced legs. Built correctly, that path is straight and the gun returns to where it started. Built poorly — arms passive, weight back — recoil flips the muzzle up and rocks you backward, and you have to re-find the target every shot. The aggressive forward posture and a slight bend in the elbows let your body and arms soak up recoil and drive the sights back down onto the target. Combined with the support-hand-dominant grip from the last lesson, a good stance is what makes fast, accurate follow-up shots possible.
The classic mistake: leaning back
The instinctive beginner error is to lean away from the gun — shoulders back, weight on the heels, trying to get away from the recoil and noise. This is exactly backward and it surrenders recoil control: a rearward-leaning shooter's muzzle flips dramatically, recovery is slow, and they're off-balance. Train the opposite from the start — get aggressive, weight forward, into the gun. If you find yourself rocking back under recoil, exaggerate the forward lean until your body stays planted and the sights track straight up and down. Think of an athlete ready to drive forward, not someone flinching away — that posture is what controls the pistol.