Here are some other relevant terms:
* στρατός (stratos) - army
* στρατιωτικός (stratiotikos) - military, soldierly
* στρατιωτική (stratiotiki) - military (feminine form)
* στρατιωτισμός (stratiotismós) - militarism
It's worth noting that the word "soldier" can have slightly different connotations depending on the context. For example, you might use στρατιώτης for a regular soldier, while στρατιωτικός might be used for a more general term that includes officers and other military personnel.