I have always been a little bewildered by the use of the bayonet. Medical statistics might show us that they were almost never used; however, these naturally suffer from survivorship bias, especially in bayonet engagements, where, as Captain Soloviev put it, there are only living victors and dead vanquished; and while we do read of counts of dead killed by the bayonet in after-action reports, this too does not show us the full picture, as we might say these single events are extreme outliers. To prove my point I think, "A Comparative study of World War casualties from gas and other weapons" (1928) puts the number of AEF casualties in the First World War caused by the bayonet at but 235; but only 4 died from their wounds. Lewis Millett's fateful charge, which killed some twenty with the bayonet, caused five times the bayonet deaths in a single day, than what we might suppose (taking those aid station statistics at face value) the US Army in WWI suffered in 19 months.
