Channel 11 had Abbott and Costello but the Bowery Boys were on Channel 5. Abbott and Costello would run from 11:30 to 1:00 and the Bowery Boys would start at 12:30. Thank goodness coming in halfway through a Bowery Boys movie didn’t affect your understanding of the plot.
The film is in the public domain, so I imagine that is why it became such a holiday tradition for WPIX. It’s A Wonderful Life became popular because of its public domain status- since people didn’t have to pay for it, they showed it at Christmastime. I’ve seen public domain DVDs of Soldiers for sale, but I don’t know if any official DVDs have been released (probably not).