The worrying thing about those rates for veterans is that the spike is in younger people, which is not the normal pattern.

There may be a "cohort" effect. See this tweet for an example of this happening in the UK: https://twitter.com/ProfLAppleby/status/1161940914308300801?...

If this is happening it's potentially really worrying, because risk usually increases with age. So we'd see an increase in rates of death as this high risk group ages into a higher risk group.