This is the 993rd most frequent Korean word.
러시아군의
"Of the Russian military."
Here, '러시아군의' means 'of the Russian army', indicating possession of the noun '병력' (forces).
러시아군의 병력이 빠르게 진격하고 있다.
The Russian forces are advancing swiftly.
Here, '러시아군의' is used to specify ownership of '장비' (equipment) by the Russian military, showing association.
러시아군의 장비가 최신 기술로 업데이트되었다.
The equipment of the Russian army has been updated with the latest technology.
In this sentence, '러시아군의' describes the strategy ('전략') that belongs to or pertains to the Russian military.