The Air Force, Marines, British, and Army Special Operations Forces do not use the Red Crosses. Only Army medical evacuation helicopters alert the enemy that they are unarmed.
It is a travesty that our Army medical evacuation helicopters are forced by Army leadership to continue to alert the enemy that they are unarmed. This situation and the battlefield consequences have been brought to the attention of many ranking officials. They have done nothing. (Well, not entirely nothing. They have stated clearly that I am unwelcome to return to combat embeds and even put out an alert for me.) Their actions and inactions are uninspiring.
Here we see the Secretary of the Army passing the buck to CENTCOM: