When Piauí drives the jeep around the fountain, at the beginning of the movie, the metal detector is hanged out of the jeep. In the middle-scene, it's well accommodated. At the end, when the jeep stops, it's hanged again.
Rui, the character, is Brazilian, but the accent of the actor Ivo Canelas is Portuguese.
Not once, but twice (in two different shots), the German deserter's chest is moving when he is declared dead.