1st
January 1921 Creation flights SAL 56
(14th) SPA BI 42
(15th) SAL 39
(16th) - 31th RAO (Tours Pau) 
1st September 1921 Creation
flights : SPA 75
N 124
Martinet (future SPA 167)
wihin the 3rd RAC
1st October 1922 Creation
on an experimental basis of 35th RAM (Régiment d'Aviation mixte)
with addition of the 3rd Group of 3rd RAC to 35th RAO in Lyon
1st July 1923 Creation 36th
GAO - Pau (Groupe Autonome d'Observation)
1st October 1923 Creation
39th RAO - Levant
1st July 1930 Summer 1930
: Winding up 33th RAM - Mayence
Distribution of its elements towards :
- 3rd RAC
- 31th RAO 
- 33th RAO
- Autonomous Bouy Group
1st January 1932 Creation
21th ECN (Escadrille de Chasse de Nuit) with traditions de la VB135
within the 21th RABN - Nancy
Creation 22th ECN
(Escadrille de Chasse de Nuit) within the 22th RABN - Nancy
Numbering change : 24th ECN RXI 239
within the 11th RAB
(old number 21th)
Numbering change : 23th ECN C 46
within the 12th RAB
(old number 4th)
1st July 1932 Wing up of the
34th RAM ,
Creation 1st EC,
34th EO
and 54th ER
Le Bourget
Winding up of the 35th RAM ,
Creation 5th EC,
35th EO
and 55th ER
Lyon Bron
1st October 1932 Winding up
of the 31th RAO ,
creation 31th EO
and 51th ER
Tours
Winding up of the 32th RAM ,
creation 7th EC,
32th EO
and 52th ER
Dijon
Winding up of the 33th RAO ,
creation 33th EO
Nancy
Winding up of the 36th GAO ,
creation 36th EO
Pau
Winding up of the 38th RAM ,
creation 38th ERO
and 38th EM
Dijon
