This is the 77th most frequent Russian word.
всу
The Russian word "ВСУ" (аббревиатура) stands for "Вооружённые Силы Украины" (Armed Forces of Ukraine).
ВСУ stands for 'Вооружённые силы Украины' (Armed Forces of Ukraine) and refers to the military organization in this context.
ВСУ защищают свою страну.
The Armed Forces of Ukraine protect their country.
Here, ВСУ is used to refer to a map related to the Ukrainian Armed Forces, signifying context-specific military geography.
На уроке географии мы обсуждали карту ВСУ.
In the geography class, we discussed the map of the Armed Forces of Ukraine.
ВСУ is explained as an abbreviation for the term 'Вооружённые Силы', denoting armed forces abstractly.