Table:
0
A
B
C
D
E
1
Equivalent NATO Rank Code
Rank in Spanish
Rank in English
Commonwealth equivalent
US Air Force equivalent
2
OF-8
General del Aire
Lieutenant General
Air Marshal
Lieutenant General
3
OF-7
Brigadier General
Major General
Air Vice-Marshal
Major General
4
OF-5
Coronel
Colonel
Group Captain
Colonel
5
OF-4
Teniente Coronel
Lieutenant Colonel
Wing Commander
Lieutenant Colonel
6
OF-3
Mayor
Major
Squadron Leader
Major
7
OF-2
Capitán
Captain
Flight Lieutenant
Captain
8
OF-1
Teniente Primero
First Lieutenant
Flying Officer
First Lieutenant
9
OF-1
Teniente Segundo
Second Lieutenant
Pilot Officer
Second Lieutenant

Questions and formulas:
Question:  What could a spanish coronel be addressed as in the commonwealth military?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,B1="Coronel"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,B2:B9="Coronel"),4))
Level: medium
Question: Give me a list of all spanish officer titles that could receive recognition as group captain in english
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="Group Captain"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,D2:D9="Group Captain"),3))
Level: medium
Question: If you are a pilot officer in the commonwealth then what will you called as in the US air force?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,D1="Pilot Officer"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,D2:D9="Pilot Officer"),5))
Level: medium
Question: If you're a major general in the US air force then what ranking will you receive in the commonwealth's air force?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,E1="Major General"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,E2:E9="Major General"),4))
Level: medium
Question: If you get a ranking as major in the  english military then what would the spanish military address you as? 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="Major"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E9,C2:C9="Major"),2))
Level: medium