The following chart below shows our CALLSIGNS - I have done it from memory.
.....what you mean,Mike, were called radio APPOINTMENT TITLES (also listed below)They were non-rank specific.
which meant they could stand for a senior (Pte.)soldier or a Colonel. For example, SEAGULL = 2/IC Sec, Pl.Sgt, CSM, RSM, Adjutant, etc
All this is not needed nowadays as all radio-traffic is encrypted & digital.
SUNRAY --------- Commander
MOONBEAM ------- Chief of Staff
SEAGULL -------- Operations / Adjutant
BOXWOOD -------- General Staff (Nuclear, Biological, Chemical)
ACORN ---------- Intelligence
MANHOLE -------- Administrative Staff
MOLAR ---------- Logistics Staff / Quartermaster
NUTSHELL ------- Q Staff / Equipment
CONROD --------- Air Defence
SPYGLASS ------- Air Reconnaissance
BASEBALL ------- Air Traffic Controller
ATOLL ---------- Air Transport Support Operations
HAWKEYE -------- Land Air
IRONSIDE ------- Armour
SHOTGUN -------- Armament Officer
SHELDRAKE ------ Artillery
CRACKER -------- Locating Battery / Arty Intelligence
HOLDFAST ------- Engineer / Airfield Construction
FORTUNE -------- Forward Air Controller
GLOWWORM ------- Ground Liaison Officer
FOXHOUND ------- Infantry
STARLIGHT ------ Medical
CONTRACTOR ----- Movements Staff
RICKSHAW ------- Ordinance
WATCHDOG ------- Provost
BLUEBELL ------- Electrical / Mechanical Engineering
PRONTO --------- Signals
PLAYTIME ------- Supply and Transport
METEOR --------- Meteorological
GOLDFINGER------ Paymaster
SKYPILOT-------- Padre