I suspect the use of the bayonet in modern-ish warfare is grossly underestimated. Based on hospital admissions, the number of men estimated to have been killed on the Western Front during the First World War was tiny. But this appears to be based on dividing the number of men admitted with bayonet wounds by three or four to come up with an estimate for those killed. They didn't do many post mortems. The thing is that a bayonet thrust more likely results in death than being hit by a shell fragment or a bullet. So, fewer hospital admissions. And the bayonet was a favoured way of killing men who had surrendered or were in the process of surrendering, which would keep hospital admissions down.