Good point about the ZZ Squad! And yes, you might be right about the Z and V letters serving as identifiers on Russia tanks. In on of the cities they invaded, they mistook a monument of a tank near a museum for a Ukrainian tank, and shot at it. Clearly, they need some help identifying their own army, and the enemy's forces as well..

The yellow armband... Most of Ukrainians are wearing yellow armbands, but some are wearing blue ones instead. Do you know why? :) It's the colours of our flag: blue and yellow. If you ever wondered what it means, it's super simple: yellow is wheat and blue is the sky. Sky signifies freedom and independence, while wheat = food that the Ukrainian soil grows and feeds the entire world (since Ukraine is a #1 supplier of wheat); plus there is a partiotic ring to it as Ukraine is a female, she's our motherland who raised us, fed us and who loves us. Hence the yellow & blue flag. which is why the armbands are also yellow or blue.