Is there a reason for the notches on the blades?
The blades were very prone to breakage [picture needed]. The vertical maneuver gear has even a spare blade storage built-in [picture needed], and in at leat one occasion one soldier was left without blades [chapter ref needed] and a companion had to share blades with him.

The notches make sense since the blades break so often even a short and less effective blade had a chance of scoring a kill and you could take the most out of a blade before it becomes completely useless.

Also, the resources inside the walls are scarce. Making the most out of the metal available also made sense.



I have no access to CR manga ATM, and cannot search for manga images. Will add the references later today.