We are as clouds that veil the midnight moon;
<span>How restlessly they speed, and gleam, and quiver </span>
Wiglaf is presented as an honorable, brave, and a loyal man. Even though his companions aren't brave people who wish to battle, he reminds them of the anglo-saxon values and chooses to help, instead of cower. A true warrior should never back down from a battle according to him, and he remains loyal and helpful.
I’m pretty sure it’s active, “every week.”