Duyster's treatment of the subject is meant to be satirical. The soldiers, who are fighting over the distribution of booty, are dressed in elaborate finery entirely unsuited to the battlefield. For example, one would not expect the pink clothing of the man on the left to appear in a serious fight.
Willem Duyster was a painter from Amsterdam who specialised in small-scale portraits and genre paintings. Duyster is an adopted surname, a pun on the name of his house, 'De Duystere Wereld' (the dark world).