I hope someone can offer some advice identifying possible missing feldbluse badges/branch of service - I have little knowledge of Wehrmacht period uniforms.

I possess a 1941 modified feldbluse (6 button, pleated pockets), stamped "M42", and unfortunately with all insignia removed. The feldbluse is definitely original. Remnants of a rank chevron are still on the left arm. Under bright sunlight, however, it is clear that on the left arm was originally a cuff title, measuring 3cm in height, and directly above the chevron was an oval-shaped badge, measuring 8.5-9cm in height, 8cm in width. Sections of thread from both patches remain on the interior: the cuff title thread is feldgrau and looks finer than 50gram, the oval badge and rank chevron are also feldgrau (slightly different shade), and appear to be 50gram. There is nothing suspicious under UV light. The areas where the patches were located are invisible under normal room light, and only became obvious under sunlight - please see attached images. Nothing is visible on the right arm.

Is it possibly Feldgendarmerie, with the oval patch representing the feldgendarmerie sleeve eagle?

The feldbluse has had considerable modification: dark green collar attached, lower bellows pockets altered to patch pockets, and two pleats on the lower back removed.

As I said, Wehrmacht period uniforms are not my area of expertise, and I greatly appreciate any advice.

Regards,

Andrew