Which one among the following is the equivalent rank of 'Wing Commander' of Indian Air Force in Indian Army?

Q: What is the answer to CAPF 2020 Paper I Q38?

C. Correct — C, Lieutenant Colonel. The three services share a single ladder of equivalent ranks, and Wing Commander in the Air Force sits level with Lieutenant Colonel in the Army and Commander in the Navy. It is the rank immediately above Squadron Leader, which matches an Army Major, and immediately below Group Captain, which matches an Army Colonel.

(a)Lieutenant
(b)Captain
(c)Lieutenant Colonel
(d)Colonel

Answer

Why

Correct — C, Lieutenant Colonel. The three services share a single ladder of equivalent ranks, and Wing Commander in the Air Force sits level with Lieutenant Colonel in the Army and Commander in the Navy. It is the rank immediately above Squadron Leader, which matches an Army Major, and immediately below Group Captain, which matches an Army Colonel.

Why the others are wrong

(a)Lieutenant — Lieutenant is the most junior commissioned rank in the Army and matches Flying Officer in the Air Force, three steps below Wing Commander.
(b)Captain — Captain in the Army matches Flight Lieutenant, still two steps below.
(d)Colonel — Colonel matches Group Captain, the rank one step above Wing Commander. This is the closest of the wrong options and the one the item is really testing.

Concept

Equivalence between the services is fixed by the order of precedence, so that officers of the same standing can be identified across uniforms regardless of the titles used. The Army ladder from Lieutenant runs to Captain, Major, Lieutenant Colonel, Colonel, Brigadier, Major General and upwards; the Air Force runs Flying Officer, Flight Lieutenant, Squadron Leader, Wing Commander, Group Captain, Air Commodore, Air Vice Marshal.

The naval column is where candidates most often slip, because two of its titles look like Army ranks and are not equivalent to them — a naval Captain matches an Army Colonel and a naval Lieutenant matches an Army Captain. Learning the three columns side by side is the only reliable method, and it is worth doing since prelims and the defence services examinations both return to it. For a CAPF candidate the ladder also matters practically, since Assistant Commandant is the entry-level gazetted rank in the Central Armed Police Forces and the forces are officered along broadly parallel lines.

Key facts

Wing Commander in the Air Force equals Lieutenant Colonel in the Army and Commander in the Navy.
Group Captain equals Colonel and a naval Captain; Squadron Leader equals Major and a Lieutenant Commander.
Flight Lieutenant equals an Army Captain and a naval Lieutenant; Flying Officer equals an Army Lieutenant and a Sub Lieutenant.
Air Commodore equals Brigadier and Commodore; Air Vice Marshal equals Major General and Rear Admiral.
Naval titles are the usual source of error, since a naval Captain outranks an Army Captain by four steps.

The three columns, aligned rank by rank

Air Force→Army — Navy

Flying Officer→Lieutenant — Sub Lieutenant

Flight Lieutenant→Captain — Lieutenant

Squadron Leader→Major — Lieutenant Commander

Wing Commander→Lieutenant Colonel — Commander

Group Captain→Colonel — Captain

The final row is the trap. Colonel is one step above the rank asked for, and the naval Captain sitting beside it is four steps above an Army Captain.

Study next

Equivalent ranks across the Army, Navy and Air ForceHigher defence organisation — the Chief of Defence Staff and the Department of Military AffairsRanks and structure of the Central Armed Police ForcesGallantry awards and the order in which they are rankedCommissioning routes into the armed forces and the examinations that lead to them

Common traps

Choosing Colonel, which is one step too high.
Assuming a naval Captain and an Army Captain are equivalent; they are four steps apart.
Confusing Air Commodore with Air Vice Marshal when working upward from Group Captain.

Either as this single equivalence or as a matching item across all three services. The three-column table answers both forms.

Related PYQs

UPSC_2024_GS1_Q692024Open & attempt →

Which of the following is/are correctly matched in terms of equivalent rank in the three services of Indian Defence forces? Army — Airforce — Navy 1. Brigadier — Air Commodore — Commander 2. Major General — Air Vice Marshal — Vice Admiral 3. Major — Squadron Leader — Lieutenant Commander 4. Lieutenant Colonel — Group Captain — Captain Select the correct answer using the code given below:

(a) 1 and 4
(b) 1 and 3
(c) 2, 3 and 4
(d) 3 only

Answer(d) 3 only

Prelims tested the same ladder as a four-pair matching item, and its key turns on the very row this question asks about — the pair placing Lieutenant Colonel against Group Captain is rejected there, because Lieutenant Colonel belongs beside Wing Commander.

Practice

practice — not a real PYQ
The Navy rank equivalent to a Colonel in the Indian Army is
- (a)Commander
- (b)Captain
- (c)Commodore
- (d)Lieutenant Commander
Answer(b) Captain — a naval Captain sits four steps above an Army Captain, which is the classic point of confusion.
practice — not a real PYQ
Which one of the following Air Force ranks is immediately senior to Wing Commander?
- (a)Squadron Leader
- (b)Group Captain
- (c)Air Commodore
- (d)Flight Lieutenant
Answer(b) Group Captain — equivalent to an Army Colonel, with Air Commodore one further step above.