I think this would work without the last line in each stanza. As it is it is working too hard to sustain the betting image. I have a fondness for this subject and think this delivers as below - and even the title could survive.The clinging mudof Ypresplayed for keeps.Lest we forget.The grumbling gunsof Francemet each advance.Lest we forget.In crawling shroudsof gas,throat-torn gasps.Lest we forget.A blown-off legor arm,wheres the harm?Lest we forget.Yet promisesof peace,never cease.The odds on bet?They will forget.