What does "notch" in this context mean?
A: Why'd you sign up for this? ("This" in this sentence refers to "TEMS - Tactical Emergency Medical Support)
B: I've seen combat as an Army medic. I was an EMT for LAFD, finished first in my class in mountain rescue, in deep water...
A: So this is another notch on your resumé, then?

Thank you

Question

What does "notch" in this context mean?
A: Why'd you sign up for this? ("This" in this sentence refers to "TEMS - Tactical Emergency Medical Support)
B: I've seen combat as an Army medic. I was an EMT for LAFD, finished first in my class in mountain rescue, in deep water...
A: So this is another notch on your resumé, then?

Thank you

Answer

It just means an accomplishment. In the old west of the US, gunfighters would put a notch on their belt when they won a gunfight.