This is the 10662nd most frequent Russian word.
войскового
"Voyskovogo" means "of military troops" or "pertaining to troops."
In this example, "войскового" describes "снабжения" (supply), specifying that it is related to military provisions.
Войскового снабжения не хватало для долгой операции.
The military supply was insufficient for a long operation.
Here, "войскового" is an adjective describing "техника" (technician), denoting someone who works in the military context.
Он был назначен на должность войскового техника.
He was appointed to the position of military technician.
Here, the word "войскового" is used as an adjective modifying "подразделения" (unit), indicating that the unit pertains to or is part of the military.