A military question for people who recall the 80's

I am back and working on some ideas for Through the years and I was wondering a simple question. Does anyone recall the cut off age that someone had to be under to join the military in 1983-1984? Would be the reserves, but I just wondered what the age is. I know it is 42 now, but not sure about 30 years ago. Also would they take someone after that age if they had been in service just a decade earlier, even if they are over the age limit by say a year?