Real Photo Postcards - Can you identify uniforms/time period?

[Collector5516]

I recently purchased a large collection of real photo postcards. The vast majority were clearly German WWI images. I'm not sure about the handful shown below. Some seem to be from the 1920s. Others might depict soldiers from other nations? These aren't really in my wheelhouse so I'd like sell/trade them but want to make sure I have them identified correctly. Thank you!

[Chip M]

The top two photos are of student groups. All the rest are post-WWI. The photos are not large enough to tell if they are German or from some other country.

Chip

[Collector5516]

Hi Chip - Just found your response to my post. Sorry it's two months later! Anyway, if you have the time, I have taken close ups. Perhaps you can shed more light on these. Thank you!

[Chip M]

The photos with the soldiers with the diagonal stripe on their collar tabs are from one of the Baltic countries, Latvia, Estonia or Lithuania. All are post WWI. Unfortunately, I don't know much about the uniforms of the armies of those countries, because I am primarily interested in WWI. Perhaps someone else can pin it down for you.

The students are dressed in the "uniforms" of their societies, which were social clubs (Burschenschaft) that promoted patriotism and participated in the art of fencing.

[Collector5516]

Thanks again, Chip. I assumed that most of these were 1930s photos. Hopefully another member will recognize some of the uniforms.