I've never learned what to do with weapons. My dad has. I remain glad that he never had to use that training in an all-out war. (War happens; we can hope that being prepared for war makes it more likely that fighting won't be as bad as it could be. There has not been a world war in 65 years. We've had many horrible, ugly conflicts in that time; still, knowing we are capable of globe-spanning conflict may have made the chance of such a global conflict happening again less likely.)
Many people have had, and used, that training. Even with the war- and war-related stories I've read, I know I can't truly imagine being a part of such events. I'm blessed in many ways, including knowing and reading people who have been veterans and who can convey to those like me what it is like to fight.
It's time to think of the many people are no longer with us who have fought, who have protected the people who they love, who have fought for the countries and ideals that they love, who have thought about the need for conflict, who have joked about their situation -- military humor is an especially needed kind of humor -- because, by fighting and sometimes by dying, they need and deserve our remembrance.
Bless you, those who have done what I have not had to do.
Happy Memorial Day.
P.S. Worth reading: puppetmaker40's thoughts for the day.