This is the 8656th most frequent Russian word.
офицеров
"Officers" (plural form).
Here, 'офицеров' is used in the plural genitive case to indicate respect for multiple officers.
У меня есть большой уважение к офицерам.
I have great respect for officers.
In this sentence, 'офицеров' is in the plural accusative case, showing the direct object of the action—seeing the group of officers.
Во время парада мы видели группу офицеров.
During the parade, we saw a group of officers.
Here, 'офицеров' is used in the plural genitive case, specifying an attribute of the heroic deeds related to the officers.