The painting is made up of a group of portraits, depicting the People's Army of Captain Frank Bing Coco and Lieutenant William van Ritterberg (located in the center).
It's commonly called The Night Watch. The Wikipedia article in English (https://en.wikipedia.org/wiki/The_Night_Watch) gives two alternative names that are more precise. People like to name things, although paintings generally communicate by means of visual language, so many titles found in art history studies are just conventional labels, used to refer to specific works, assigned by scholars, curators, critics, and collectors. Sometimes the titles of pictures are misleading, as may be the case of The Night Watch, which had darker colors before layers of old varnish were removed during restoration. In more recent centuries, many artists have taken to naming their works, while others refuse to do so, preferring to keep the intersubjective sharing of experience on a visual, nonverbal level.
The Nght Watch, of course, em português A Ronda da Noite. A treasure of the Dutch painting: I am thinking about the care the Dutch citizens had during Second World War, to hide the painting of the Nazis.
Official title is 'The Shooting Company of Frans Banning Cocq and Willem van Ruytenburch' (Dutch: Schutters van Wijk II onder kapitein Frans Banninck Cocq en luitenant Willem van Ruytenburch), but popularly known as 'The Night Watch' (Dutch: De Nachtwacht).
Artist: Rembrandt van Rijn
Year: 1642
Medium: Oil on canvas
Dimensions: 363 cm × 437 cm (142.9 in × 172.0 in)
Location: Amsterdam Museum on permanent loan to the Rijksmuseum, Amsterdam