This is the 5659th most frequent Polish word.
wojskowi
"Military personnel" or "soldiers."
Here, 'wojskowi' is used as a noun to denote individuals who serve in the armed forces.
Wojskowi są odpowiedzialni za obronę kraju.
The military personnel are responsible for the country's defense.
In this sentence, 'wojskowe' is used as an adjective derived from the noun 'wojskowi', describing the nature of the exercises as related to the military.
Ćwiczenia wojskowe odbywały się przez cały tydzień.
The military exercises took place throughout the week.
Here again, 'wojskowi' is utilized as a noun referring specifically to the individuals serving in the armed forces.