The US Army’s Special Forces teams are 12 people. Despite their small size, these teams can equal the fighting power of a light infantry company. The capabilities of one of these teams:
Plan and conduct Special Forces operations separately or as part of a larger force; infiltrate and exfiltrate specified operational areas by air, land, or sea; conduct operations in remote areas and hostile environments for extended periods of time with a minimum of external direction and support; develop, organize, equip, train and advise or direct indigenous forces up to battalion size in special operations; train, advise and assist other U.S. and allied forces and agencies; plan and conduct unilateral SF operations; perform other special operations as directed by higher authority.
The small team size comes with a bunch of advantages: They’re self-contained, can work swiftly and quietly, don’t have the presence of conventional military troops, and are able to operate without a big infrastructure.
Big can be powerful. But even the Army realizes small can be a great way to get things done too.