Marching

2 clues
Paraders' activity
While we were ___ through . . .
Similar answers:
Aahing
Abashing
Abathingbeauty
Abolishing
Aching
Achingjoints
Achingly
Acidwashing
Aclothingstorewhere
Adangerousthing
Admitnothing
Admonishing
Afadissomething
Afishingterm
Afterwashingit
Agemakerfishing
Agoodthingtosay
Agreetoanything
Aguything
Aintseennothingyacht