The rules that use the vocabulary item "group" are:

<a_a_v>

aav command group

<team_or_group_section_echelon>

commando company command group

mech battalion command group

mechanized battalion command group

mixed self propelled anti air command group

mixed self propelled anti air radar group

mixed sp aa command group

mixed sp aa radar group

swa commando company command group

<a_a_v-sing>

aav command group