Here are the possible solutions for bygone army fare and a way to describe the starred answers clue
Answer
Clue
Relevancy
crations
Clue
Bygone army fare, and a way to describe the starred answers
adadds
Clue
One way to describe the theme answers?
valueofpi
Clue
Subject of an annual March 14 celebration and of this puzzle, celebrated in both a literal and a numerical way in the first square of the starred answers, reading left to right
rearseats
Clue
What many sports cars lack, and, in a way, what the ends of the starred answers are