This is the 1420th most frequent Polish word.
wojskowe
"Military" or "related to the military."
Here, "wojskowe" is used as an adjective to describe the nature of the classes, which are related to the military.
Zajęcia wojskowe odbywały się codziennie.
Military classes took place every day.
In this sentence, "wojskowy" describes the type of equipment, indicating its association with the military.
To jest sprzęt wojskowy.
This is military equipment.
"Wojskowe" again functions as an adjective, modifying "zadania" (tasks) to specify that they are of a military nature.