How does Richard Lovelace depict war in this excerpt from “To Lucasta, Going to the Wars”?

And with a stronger faith embrace
A sword, a horse, a shield.

Yet this inconstancy is such,
As you too shall adore;
I could not love thee, Dear, so much,
Loved I not honour more.

as a deplorable act
as a forced sacrifice
as an honorable mission
as a necessary rite of passage