Included in Joe's military records is a list of all the times he went on leave.
I have been able to figure out from the dates listed why he was on leave (or what was going on) for five of them.
From 18 Sep 58 to 21 Sep 58 - First child was conceived.
13 May 59 to 17 May 59 - First wedding anniversary.
30 Jun 59 to 5 July 59 - First child born.
15 Nov 60 to 4 Dec 60 - Second child born.
4 Mar 62 to 16 Mar 62 - Hubby conceived.
What he was up to the rest of the time, Lord only knows.