From what I understand so far, It's Alice Shimada's Centurion tank crew in St. Gloriana. This line-up is different from her Centurion crew in Selection University team(post #5234133) since they were university students.

The names of the Crusader crew have been identified:

elderflower (girls und panzer)
coconut (girls und panzer)
BOP (girls und panzer)
dooars (girls und panzer)

waniescagada said in comment #2641648:

The names of the Crusader crew have been identified:

elderflower (girls und panzer)
coconut (girls und panzer)
BOP (girls und panzer)
dooars (girls und panzer)

I think you mean the Centurion and not the Crusader.