Lyric discussion by sjappie 

Cover art for Jonathan David lyrics by Belle & Sebastian

I think the line "It's not as if I'm being sent off to war", is a reference to the biblical king David sending Uria off to the front lines. Uria was the husband to Bathseba in whom David had a sexual interest. Uria was killed in the war, as anticipated by David, who could have his way with Bathseba because of that.