system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why aren't the Russian troops in Crimea wearing insignias?

It was obvious from the beginning they were Russian troops and now it's been confirmed so why not wear any identifying markings?
gpt
It creates confusion in the initial hours of invasion which can delay a response by the Ukrainians and/or the West. You can't exactly make hard policy decisions without confirming who you first are fighting. 

At this point passing out insignia is on the bottom pillar of Russia priorities so they stay unmarked despite no longer needing to.