I am forced to admit that I had to google 'breakaway anniversary'.
I never saw the episodes as they were originally aired, but I did see quite a few of the re-runs when I was a kid.
iirc, the first season was good, but then new writers came in and it went a bit 'weird' ? Was a good show non the less!
I hate to admit it, but I remember when the series came out. I never really liked the show (I think even at that tender age the idea of the moon traveling fast enough to go anywhere interesting in a reasonable time overwhelmed my suspension of disbelief), but I had seen dribs and drabs of the old "UFO" show and thought it was way cool, and they re-used the ship minatures for S1999 so I think I watched it just for that
(I may have UFO confused with one of the other puppet shows of the time - I was pretty young when I saw it.)
Definitely got weird as time progressed, which I think is a standard danger for "Route 66" type space travel shows (a different adventure at a different location each week) - eventually they run out of story lines, which is usually when they bring in the Klingons (or the Borg, or the ....) BTW, IMHO this was one of the incredible things about B5 - since he had the 5-year story arc outlined from day 1, he didn't run out of plot a year and a half into the series as happened to e.g. BSG.
John