According to wikipedia, the full title of Rembrandt's painting is Militia Company of District II under the Command of Captain Frans Banninck Cocq, also known as The Shooting Company of Frans Banning Cocq and Willem van Ruytenburch.
A lot of controversy has existed over the meaning of the two (three!)
figures immediately to the left of the Captain; they are the only people
in the painting who aren't actual real people who are members of the
militia company. The first are two girls - the one in the foreground has
a hen/rooster on the belt, and the one in the background (behind the
first girl) holds a boiling pot. The second (third) figure is a soldier
shooting a gun.
I am going to suggest that these figures spell the names of Frans Banninck Cocq and Willem van Ruytenburch.
"Frans" means "French" in Dutch - this is the royal looking girl with the rooster
on the belt; the rooster is the symbol of France, and France was a
monarchy at the time.
"Banninck" can be separated into "ban" and "ink" (same in Dutch), which could be seen as the Captain's attire; black (ink) crossed out with a red line (ink), on a white page.
"cook" in Dutch. This is the boiling pot that is being held by the girl in the
background (pointed at by a glove), which makes her a cook.
Willem is short for "Wilhelm" which comes from "will" (same in Dutch)
and "helm" ('helmet', or 'to protect'). This is the "willful" posture of
the soldier with the gun and the helmet on his head. "Ruytenburch" is a
misspelling of "Ruytenburg". "Ruyten" means "to raid" and "burg" is a
small fortified place or town, i.e. he is a "town-raider" which roughly
means "a brigand". Brigands "take"(steal) by the force of arms. This
is the hand underneath the barrel of the gun, coupled with the barrel of
the gun which points towards the Lieutenant.