The national level of suicides in UK over the inter-war period 1918 to 1939 was approx 25 suicides per 100,000 males per year. So statistically one would expect over 20 years to encounter 10 suicides among ADRIC force of about 2000 men. Their suicide rate is nearly three times that in ex-ADRIC with at least 48 suicides from 2100 men . Looking just at the 20 years from 1920 to 1940 there were 37 suicides, 1.80 a year or a statistical 87 per 100,000 per year (against a national average of 25 per 100,000)
| Spenle HE | 1920 | Shot himself in Dublin |
| Regnart CN | 1921 | Shot himself in Kilkenny |
| VR Scott | 1921 | Shot himself in Dublin |
| Crabbe CE | 1921 | Shot himself in Dublin Castle |
| Morrison FW | 1921 | Drowned himself in Dublin |
| Smith, Buxton | 1922 | Shot himself in London |
| Herbert MG | 1922 | Gassed himself |
| Kemp GAD | 1922 | Poisoned himself in London |
| Merideth AC | 1922 | Shot himself in Broadstairs |
| Belier LV | 1922 | Shot himself in Dublin |
| Maillard GC | 1922 | Shot himself in Epsom |
| Croke FB | 1923 | Shot himself in Palestine |
| Pope C | 1924 | Probably. He had attempted suicide in 1923 |
| Davey JK | 1925 | Threw himself under a train |
| Cubley PS | 1925 | Jumped off London Bridge |
| Dalton S | 1925 | Jumped out of a window |
| Forster LP | 1926 | Shot himself in Gibralter |
| Lawrenson VPA | 1927 | Threw himself under a train |
| Lamb GM | 1928 | Poisoned himself with rat poison |
| Woodstack HE | 1929 | Overboard from ship |
| Knight MW | 1929 | Razor |
| Bone AF | 1929 | On Railway Track |
| Dawe HT | 1930 | Gassed himself |
| Phillips WG | 1931 | Suffocation in Malaya |
| Lyle H | 1931 | Murdered his wife, committed suicide in Canada |
| Arnott JE | 1932 | Poison in Australia |
| Smith FC | 1932 | Gassed himself |
| Kelly W | 1932 | Gassed in Belfast - verdict misadventure |
| Tudor WJR | 1933 | Gassed himself |
| Atkinson H | 1934 | Shot himself |
| Eldridge HH | 1934 | On railway track |
| Kemble RE | 1935 | Suicide - poison |
| Paulson P | 1935 | Probably suicide - drowned in Dublin |
| Webster JS | 1936 | Drug overdose |
| Lauder EA | 1936 | Shot himself |
| Foley FA | 1938 | Murdered wife and then cut his throat in Australia |
| Wainwright D | 1939 | Drowned |
| Delmer G | 1939 | Australia. Slit his wrists |
| Owen GW | 1939 | Under a train in India |
| Douglas HS | 1940 | Found gassed, may have been suicide |
| Newnham SAC | 1942 | Shot himself |
| Costigan RH | 1942 | Shot himself |
| Bolton AE | 1947 | Gas poisoning |
| Eddowes CFB | 1949 | Gas poisoning, may have been suicide |
| Linton VW | 1949 | Amytal Sodium Poisoning. Probably Suicide |
| Ault AT | 1949 | Put his head in the gas oven, suffering from cancer. |
| Rogers CEB | 1954 | Shot himself |
| Tinniswood JN | 1959 | gassed himself |
Hittle in Michael Collins and the Anglo Irish War records that there were 7 Men serving under Winter who eventually committed suicide - 5 of them on active service. Last Days in Dublin Castle quotes 5 but I cannot find them all
| Spenle HE | 1920 Nov 21 | Shot himself in Dublin |
| Regnart CN | 1921 | Shot himself in Kilkenny |
| VR Scott | 1921 | Shot himself in Dublin |
| Crabbe CE | 1921 May 16 | Shot himself in Dublin Castle |
| Last Days in Dublin Castle records a | suicide by shooting in Winter's Office | "this is the 5th" |
| Morrison FW | 1921 | Drowned himself in Dublin |
| CA Cameron | 1924 Aug 19 | Shot himself in barracks in Sheffield |
| GN Fitzjohn | 1929 Aug 8 | Poison |
| V Saringny | 1930 Dec 31 | Shot himself in a London hotel |
Attempted Suicide
| Frame IM | 1929 | Attempted Suicide | Under trial for theft |
| Rogers AG | 1932 | Attempted Suicide | bound over 12 months |
| Worrell CA | 1939 | Attempted Suicide | Carbon monoxide in garage |