The bulk update request #4449 is pending approval.
create alias army_helmet (113) -> military_helmet (263)
create alias soldier_helmet (21) -> military_helmet (263)
create implication military_helmet (263) -> combat_helmet (181)
Reason: Same thing. Different words.
Military helmets are a type of combat helmet.
The military helmet tag has been used to refer to combat helmets worn by modern day soldiers.