Broadside is an American sitcom that aired on ABC during the 1964-1965 TV season. The series, produced by "McHale's Navy" creator Edward Montagne, starred Kathleen Nolan, formerly of "The Real McCoys" (her character, Lieutenant Morgan, had first appeared on "McHale's Navy" the previous season).
ABC was  the second  one in having Broadside.
It says it arise on ABS, so according to the text, it was the first one. 