Fighting in Najaf, wounded in hospital

The video covers an introduction, a discussion on benefits, and concludes with final thoughts.

What do you think the speaker means by 'I know that.'?

What could the speaker be referring to when they say 'I'm gonna just.'?

What are some potential benefits that the speaker might be alluding to?

What do you think the significance of the word 'Double' is in this context?

Why might the speaker say 'double. Probably not.'? What does this imply?