Our Vanaguð herra (/Lord) Freyr cares for our worldly needs. He also wants us to get the greatest divine nourishment, that which is even more vital to life than food. We find that in lognfara lundur Barri (/the peaceful grove of evergreens). Gerður in Gymisgarðar knows this here deep inside. (–Edda poem Skírnismál–).
Vanaguð are all for our inner peace and our worldly prosperity.
We know that wars mean destruction, stress, death, and lack of food. There was never any army of Vanir. Some misreading in Völuspá, and perhaps other poems and myths, was the unfortunate cause of this stupid story.