Casablanca uses continuity editing to give a steady flow to the narrative an example being this plane scene.
1.establishing shot of plane landing to set the scene and further display the setting
2.XLS shot showing the large army giving importance to whoever’s landed.
3.LS shot shows the man walking out the plane into the frame.
4.MS shot to show man up close as ell as establishing a second character he will talk to.
5.MCU shot to give an up close reaction of the man.
6.MCU reverse angle shot to show how the other man is reacting.