DEFE3 file series list, 1944–45 (page three)

ULTRA "Main Series of Reports to Allied Commands", file references for 1944–45

Year/month	DEFE 3/ reference	Dates messages deciphered	Message numbers

1944
December	314	3–6	HP 8501–8750
	315	8–9	HP 8751–9000
	316	9–12	HP 9001–9250
	317	12–15	HP 9251–9500
	318	15–18	HP 9501–9750
	319	18–21	HP 9751–9999
	320	21–24	BT 1–250
	321	24–27	BT 251–500
	322	27–30	BT 501–750
	323	30 Dec–2 Jan	BT 751–1000
1945
January	324	2–4	BT 1001–1250
	325	4–7	BT 1251–1500
	326	7–9	BT 1501–1750
	327	9–11	BT 1751–2000
	328	11–14	BT 2001–2250
	329	14–16	BT 2251–2500
	330	16–19	BT 2501–2750
	331	19–21	BT 2751–3000
	500	21–24	BT 3001–3250
	501	24–27	BT 3251–3500
	502	27–30	BT 3501–3750
	503	30 Jan–2 Feb	BT 3751–4000
February	504	3–6	BT 4001–4250
	505	6–10	BT 4251–4500
	506	10–13	BT 4501–4750
	507	13–17	BT 4751–5000
	508	17–20	BT 5001–5250
	509	20–23	BT 5251–5500
	510	23–26	BT 5501–5750
	511	26 Feb–1 Mar	BT 5751–6000
March	512	1–4	BT 6001–6250
	513	4–7	BT 6251–6500
	514	7–9	BT 6501–6750
	515	9–12	BT 6751–7000
	516	12–15	BT 7001–7250
	517	15–17	BT 7251–7500
	518	17–20	BT 7501–7750
	519	20–22	BT 7751–8000
	520	22–25	BT 8001–8250
	599	25–27	BT 8251–8500
	600	27–29	BT 8501–8750
	601	29–31	BT 8751–9000
	561	31 Mar–2 Apr	BT 9001–9250
April	562	2–5	BT 9251–9500
	563	5–7	BT 9501–9750
	564	7–9	BT 9751–9999
	565	9–12	KO 1–250
	566	12–15	KO 251–500
	567	15–18	KO 501–750
	568	18–21	KO 751–1000
	569	21–24	KO 1001–1250
	570	24–27	KO 1251–1500
	571	27–30	KO 1501–1750
April–May	572	30 Apr–15 May	KO 1751–2089

PART THREE OF THREE

Notes:

(a) Messages are arranged in series of 9999, each prefixed by two letters (e.g. HP1–HP9999)

(b) Each file contains 250 messages, usually arranged from the highest numbered first to the lowest last.