Most babies start army crawling between 7 and 9 months old. This style of movement, where a baby drags their belly along the floor while pulling forward with their arms, is often the first way infants figure out how to get from point A to point B on their own. Some babies skip it entirely and go straight to hands-and-knees crawling, while others army crawl for weeks before progressing.
What Army Crawling Looks Like
During an army crawl (also called a commando or belly crawl), your baby’s stomach stays flat on the floor while they use their forearms to drag themselves forward. It looks effortful and a little uncoordinated at first. Some babies pull mostly with their arms, others push off with one foot while the opposite arm reaches forward, and some scoot backward before they figure out how to move in the direction they actually want to go.
This is different from traditional crawling, where a baby lifts their belly off the ground and moves on hands and knees in an alternating pattern (right arm with left knee, then left arm with right knee). Army crawling requires less core strength and balance, which is why it typically comes first. Think of it as a stepping stone: your baby is learning to coordinate both sides of their body before they’re strong enough to hold themselves up on all fours.
Signs Your Baby Is Getting Close
Before the full army crawl appears, you’ll likely notice a few smaller milestones during tummy time. These “pre-crawling” movements usually show up around 5 to 7 months and signal that your baby is building the strength and coordination they need.
- Pivoting on their belly: Your baby spins in a circle on their stomach, rotating clockwise or counterclockwise to reach a toy or follow you with their eyes.
- Pushing backward: Instead of moving forward, your baby pushes with their arms and slides in reverse. This is frustrating for them but completely normal.
- Rocking on hands and knees: Your baby gets up on all fours and rocks back and forth without going anywhere. This builds the shoulder and hip stability they’ll need for crawling.
If you’re seeing any of these, army crawling is likely not far behind. The backward-scooting phase in particular tends to happen just a few weeks before a baby cracks the code on forward movement.
Why Army Crawling Matters for Development
It’s tempting to think of army crawling as just a way to get around, but the movement itself builds a surprising amount of physical and cognitive infrastructure. Dragging across the floor strengthens muscles in your baby’s core, back, hips, and shoulders. These same muscle groups are essential for sitting upright, pulling to stand, and eventually walking.
Crawling in any form also helps with sensory development. Your baby is feeling different textures under their hands and body, judging distances to objects, and learning how their own movement changes what they can see and reach. That alternating arm-and-leg pattern builds bilateral coordination, the ability to use both sides of the body together in a controlled way. This skill shows up later in activities like climbing stairs, catching a ball, and even handwriting. The independence of being able to move toward what they want also builds early confidence and motivation to explore.
The Typical Timeline From Belly to Walking
Every baby moves at their own pace, but a general progression looks something like this. Army crawling begins around 7 to 9 months. Hands-and-knees crawling follows between roughly 9 and 11 months, once a baby has enough upper body and core strength to lift their belly off the ground. Some babies spend a month or two army crawling before making that transition, while others move through the stage in just a couple of weeks.
Not all babies follow this exact sequence. Some roll everywhere instead of crawling, some scoot on their bottoms, and some skip crawling altogether and go straight to pulling up and cruising along furniture. These variations are normal. The key thing pediatricians look for is whether your baby is finding some way to move independently and showing progress in their gross motor skills over time, not whether they hit a specific style of crawling by a specific week.
How to Encourage Army Crawling
The single most effective thing you can do is give your baby plenty of floor time on a firm, safe surface. Babies who spend most of their day in bouncers, swings, or car seats have fewer opportunities to practice the pushing and pulling movements that lead to crawling.
Tummy time is the foundation. If your baby tolerates it, aim for frequent short sessions throughout the day rather than one long stretch. Once they’re comfortable on their belly and starting to pivot or push, place a favorite toy just out of arm’s reach. The motivation to grab something they want is often what finally triggers that first forward lurch. A slowly rolling ball or a toy that makes noise can be especially effective because it gives your baby a moving target to chase.
Let your baby go barefoot on the floor whenever possible. Bare feet grip surfaces better than socks, and the sensory feedback helps strengthen foot and ankle muscles they’ll use for balance later. Resist the urge to “help” by moving your baby forward or placing them in a baby walker. Walkers don’t teach the coordination patterns that crawling builds, and the American Academy of Pediatrics has long discouraged their use for safety reasons as well.
When Late Crawling May Signal a Concern
The normal range for beginning to crawl is wide, and some perfectly healthy babies don’t crawl until 10 or 11 months. A delay in one milestone alone isn’t usually cause for alarm. What pediatricians watch for is a pattern: if your baby isn’t rolling over, isn’t bearing weight on their arms during tummy time, and shows no interest in moving toward objects by 9 or 10 months, that combination could point to a gross motor delay worth evaluating.
Other things to pay attention to include consistently using only one side of the body (always reaching or pushing with the same arm), stiffness or floppiness that seems unusual, or a loss of skills your baby previously had. The AAP recommends formal developmental screening at 9 months, which is a natural checkpoint to raise any movement concerns with your baby’s provider. Early intervention for motor delays is highly effective, and most babies who get support catch up quickly.