Collar, which branch of military?

[jaxmon]

here is picture of forestry officer uniform. Collar tabs differ depending on which era they were worn. Your picture most likely shows 1950-1970 era.

[Wilhelm Saris]

Which branch of the military do the collars in the photo represent?

Have not seen this form before, as far as I can remember, but they are in no way German
TR forestry. That is for sure!
Thanks to HPL2008 - they are Polish

[HPL2008]

I Google'd around a bit and came up with these rank insignia charts for Polish forestry officials:

Dystynkcje Polskich S

The ones seen in the photograph would appear to be of this type:

Dystynkcje Polskich S

(Unfortunately, as I don't speak Polish and the subject is outside my area of expertise, I cannot offer any additional information.)

[ChrisW01]

Thanks for everyone's replies, I think its confirmed as definitely forestry. I have attached an image of a higher rank designated as Dyrektor Genetraloy lasow Panstwowych = ‘General Director of State Forests’ as conformation of the collar style for the period which I assume is the 1950’s early 60’s.