If part of "War Is Kind" takes place on the battlefield, the other part takes place at home—away from the battlefield. But just because it's far away, doesn't mean it's not touched by war. The homes of the maiden, the babe, and the mother are broken places. There's something missing in all of them—a lover, a father, and a son. War doesn't just take lives; it destroys homes and families as well.
The home front is supposed to be away from the war, but it's just as much a war zone as the battlefield itself: there is as much death and grief for the maiden, the babe, and the mother as for the soldiers fighting.
The speaker always talks about that darn battlefield, even when he's all snuggled up at home. Sure sounds like he feels more at home on the frontlines than in his actual house.