Continuity mistake: At the start of the film we see two guys on the bin wagon. The one on the left of the screen already has his Uzi in his left hand, yet in the next shot we see him lean into the back of the bin wagon to pick it out. (00:01:45)
Continuity mistake: At the start, the way the right hand binman holds on differs between shots. (00:01:50)
Continuity mistake: As the two garbage men are shooting the guy at the start of the movie, we see from the side shot that they are standing parallel to each other a few feet apart and they stay still as they shoot him. Then when the camera changes angles to the front shot after the dead guy falls, we see the bad guy on the right has moved a few feet forward. (00:01:50)
Continuity mistake: After Matrix's daughter puts ice cream on him, the ice cream on both him and her's changes from higher and lower positions between shots. (00:05:30)
Continuity mistake: During the initial credits, the amount of ice cream on Matrix's nose and lip decreases between frames. (00:05:30)
Continuity mistake: When Matrix's daughter dirties him with ice cream, he turns his head to the left, yet in the opposite angle the head remains straight. (00:05:50)
Continuity mistake: Just as Matrix says about growing up in East Germany, his daughter has her hand on a glass of juice. However, as the shot changes, she is now holding her sandwich with two hands. (00:07:40)
Continuity mistake: The amount of juice in the glass when Matrix has breakfast with his daughter suddenly changes from a third to over a half of the glass. (00:07:40)
Continuity mistake: When Matrix's daughter brings the food, Matrix's sandwich is either pointing in a 6 o'clock direction, or in a 8 o'clock, depending on the angle. (00:07:45)
Continuity mistake: When Matrix's daughter brings the sandwiches and he talks about Boy George, the magazine is sometimes on top of the sandwich or side by side to the dish. (00:07:45)
Continuity mistake: As Matrix and his daughter are eating their sandwiches at the start of the film we see Matrix holding his sandwich looking out the window when he hears the chopper. Then, as the camera angle changes, the sandwich is now back on the plate. (00:07:50)
Continuity mistake: While eating sandwiches, Matrix's daughter says, "You don't wanna know" as she reaches for a napkin. A frame later, from a different angle, her hands are empty as they reach for the napkin. (00:08:20)
Continuity mistake: When the chopper is about to land, Matrix says "I'm not going anywhere", and stares at his (off screen) daughter in an 8 o'clock position. Yet a frame later, with her on-screen, he is looking downwards. (00:08:40)
Continuity mistake: When the army helicopter lands, a person gets out on the left-hand side and moves in front of the glass window of the door that's open. Camera changes and he emerges from the helicopter again. (00:09:10)
Continuity mistake: When the military guy leaves Matrix's house, the chopper's shadow points in a 12 o'clock direction. A frame later it's pointing to 3 o'clock. (00:11:25)
Continuity mistake: When the baddies are destroying Matrix's house he is laying on the floor covering his daughter's head. The position of the hand keeps swapping depending on the angle. (00:11:50)
Continuity mistake: When Matrix jumps inside the house to protect the girl from the shootings, the blood stain on his forehead suddenly disappears. (00:12:00)
Continuity mistake: When Matrix's house is being destroyed, the leaves next to the soldier's head on the floor increase/decrease depending on the angle. (00:12:10)
Continuity mistake: When Matrix is home covering his daughter, the soldier's thumb next to him is bloody in the close-up angle, but clean in the wide angle. (00:12:20)
Continuity mistake: As we see Matrix enter his gun shed, he picks up a pistol and tucks it into his pants. He then runs back to the house and kills the guy in the chair. As he leaves the house, the gun is now tucked into his belt. (00:12:25 - 00:13:25)
Answer: Possibly so any surviving enemies they encountered on previous missions and or tours of duty couldn't hunt them down and kill them for revenge.