unit aid post (UAP)

navigational aid (NAVAIDs); aid to navigation (ATON)

junction aid (obstruction aid)

obstruction aid (junction aid)

medical aid post

regimental aid post (RAP)

first aid post

aid post

aiming post lamp / aiming post light

unit recovery post

battery coolant unit / battery-coolant unit (BCU)

gear reduction unit / gear-reduction unit

position and navigation unit / position navigation unit (PNU)

pinch (a unit) out of a large unit

aid agency

aid man section

aid station

aid to navigation (ATON)

aid worker

battalion aid station (BAS)

buddy aid

comprehensive aid

disaster aid / relief

emergency aid

first aid facility

first aid kit

first-aid skills

food aid

humanitarian aid / assistance (HA)

individual first-aid kit (IFAK)

invisible light aid

light aid detachment (LAD)

medical aid-man