A TikTok account named "mtrks25" has published a video showing footage of several soldiers.
The caption of this video claims to show footage of armed forces training in our country, on the border with Serbia.
After verification by hibrid.info, it has been confirmed that, contrary to the claim, Ukrainian soldiers are seen in the footage.
Link to the video material published by the "mtrks25" account on TikTok:
Through search engines, based on the logo on the soldiers' arms, it is shown that the military uniforms belong to the Ukrainian armed forces (see here).

To prove that this is not about military forces from our country, hibrid.info has also found the emblem of the KSF, to compare it with the emblem of the Ukrainian forces (see here).

Analyze:
A TikTok account has published a video claiming to show footage of military exercises by our country's armed forces on the border with Serbia.
Hibrid.info has researched and found that the military forces seen in the video belong to the Ukrainian state.
Based on its work methodology, hibrid.info assesses this video content as "Fake News".
Reasoning:
The "Fake News" rating is given to media reports that are entirely the product of a medium that itself contains factually incorrect claims or information.
Content that is considered fake news can be reliably determined to have been created and distributed with the intent to misinform the public, i.e., to present a claim that is completely false as fact.