Squadron Identification Codes of WWII

A two letter code identified which squadron an aircraft belonged to. ie WS = 9 Sqdn

An additional letter identified the individual aircraft, ie WS-A = aircraft 'A'

Temporary replacement or additional aircraft were identified by underlining the identity letter or adding a number after the identity letter ie: WS-A - WS-A - WS-A2

Squadron	Code
7	MG / XU
9	WS
10	ZA
12	PH / GZ
15	LS / DJ
18	WV
21	LS / QN / PH / YH
23	??
35	TL / FB
37	LF
38	RL / HD
40	BL
44	KM
49	EA
50	VN
51	UT / MH / LK / C6
57	DX
58	BY / GE
61	QR
75	AA / JN
76	MP
77	KN
78	EY
82	UX
83	OL
85	VY
88	RI / RH
90	WP / XY
97	OF / XY
98	VO
99	LN
100	HW / FZ / JA
101	SR
102	DY
103	PM
104	EP
105	GB
106	ZN
107	OM
109	HS
110	AY / VE
114	RT
115	KO / AA / IL / A4
128	WG
138	AC / NF
139	XD
141	TW
142	QT / 4H
144	PL
149	TK / OJ
150	JN / IQ
153	P4
156	GT
157	??
158	NP
161	JR
162	MA
163	CR
166	AS
169	VI
170	TC
171	6Y / EX
180	EV
186	XY / AP

Squadron	Code
189	CA
192	DT
195	A4 / JE
196	ZO
199	EX
207	EM
214	BU / PX
218	HA / XH
223	6G
226	MQ
227	9J
239	??
300	BH
301	GR
304	NZ
305	SM
311	KX
320	NO
342	OA
346	H7
347	L8
405	LQ
408	EQ
415	6U
419	VR
420	PT
424	QB
425	KW
426	OW
427	ZL
428	NA
429	AL
431	SE
432	QO
433	BM
434	IP / WL
455	OB
458	FU
460	AR / UV
462	Z5
463	JO / BO
464	SB
466	HD
467	PO
487	EG
514	JI / A2
515	3P
550	BQ
571	8K
576	UL
578	LK
582	6O
608	6T
617	AJ / KC / YZ
619	PG
620	D4 / QS
622	GI
623	IC
625	CF
626	UM
627	AZ
630	LE
635	FL / F2
640	C8
692	P3
1409 Flt	??