I have been trying to categorize a bunch of my disks and I came across these today I would like any input someone may have.

These first 3 are pretty simple, actually too simple.

First I have a disk stamped "1 N 77" over "83" with an "AB" far to the right of all that.
I think this is 1 company Nachrichten-Abteilung 77? soldier #83 Blood type AB.

Second I have a disk stamped: "2./B. 44" with 128 below that and a small "B" off to the right.
I think this is 2 company battalion 44 but it seems pretty sketchy without anything else.

Third one- "3.E/B. 44" the replacement organization for the second disk.