This is the 15411th most frequent Polish word.
specnazie
"Specnazie" refers to "Spetsnaz," which are Russian special forces.
In this sentence, 'specnazie' is a locative case of the noun 'specnaz' (Spetsnaz), used to indicate 'about' or 'concerning' in the context of discussing the Russian special forces.
Czytałem wczoraj książkę o specnazie.
I read a book about Spetsnaz yesterday.
Here, 'specnazie' is used again in the locative case to denote being 'in Spetsnaz', referring to the group where certain conditions apply.
Słyszałem, że w specnazie wymagają dużej sprawności fizycznej.
I heard that in Spetsnaz they require significant physical fitness.
This usage involves describing one's experiences 'in Spetsnaz', again leveraging the locative case of the noun 'specnaz'.