A cohort was 80 infantrymen.
a Squad.
A small group of soldier is called a section or a squad. A section typically consists of 7 to 12 soldiers. Bigger groups are known as platoons, Company and battalion in ascending order.
There was not a name for Jewish soldiers. The Jews did not fight in the Roman army.
Small Soldiers
Patriots
airborn
The group name for soldiers is typically referred to as a "platoon." However, soldiers can also be organized into larger units such as companies, battalions, or brigades, depending on the military structure and size. Each of these units consists of multiple soldiers and serves specific operational roles within the military hierarchy.
sausage fest
copse it is a small group of trees
It was the centurion, named after the Latin for 100 (centum)
A government ruled by a small group of people is an oligarchy.
The Franks, a group of Germanic people.