| Date of enlistment | 10th July 1915 |
| Rank at enlistment | Private |
| Company | D Company |
| Significant events while with the AIF | Wounded in Action – Pozieres
Hospitalised sick four times Marriage |
Summary of Private Simkin’s WW1 service record, located in the National Archives of Australia. Full details are available online, NAA Series B2455
| Date | Location | Event |
| 24th October 1919 | Australia | Discharged |
| 23rd August 1919 | Australia | Disembarked at Melbourne |
| 3rd July 1919 | England | Return to Australia via Zealandic, with wife and 4 children |
| 15th January 1919 | England | Marched in to Codford |
| 4th December 1918 | England | Absent without leave – forfeiture of 12 days pay |
| 15th November 1918 | England | Marched in to 5th Training Battalion Fovant |
| 30th October 1918 | England | Marched in to Training Brigade Longbridge Deverill |
| 19th August 1918 | England | Marched in to No.4 Command Depot Hurdcott following two weeks furlough |
| 1st August 1918 | England | Transferred to 3rd Auxiliary Hospital Dartford |
| 27th June 1918 | England | Admitted Bath War Hospital – appendicitis |
| 26th June 1918 | France | Embarked Rouen for England |
| 15th June 1918 | France | To 20 CCS hospital sick – appendicitis |
| 14th October 1917 | Belgium | Taken on Strength |
| 9th October 1917 | England | Proceeded overseas to France via Southampton from Hurdcott |
| 19th September 1917 | England | Transferred to 22nd Battalion |
| 20th June 1917 | England | Marriage to Rose Peck (widow) in Pewsey, Wiltshire |
| 26th April 1917 | England | Discharged to depot |
| 25th April 1917 | England | Sick to 16th Field Ambulance Hospital Wareham |
| 23rd March 1917 | England | Taken on Strength to 65th Battalion |
| 17th February 1917 | England | Marched in to Perham Down |
| 28th December 1916 | England | Marched in to No.1 Con Depot |
| 12th December 1916 | England | Admitted to Brigade Hospital Perham Down |
| 31st October 1916 | England | To No.1 Command Depot Perham Down |
| 16th October 1916 | England | Discharged from hospital to furlough |
| 12th August 1916 | England | Admitted to Chatham Military Hospital |
| 10th August 1916 | France | Embarked at Calais on Brighton |
| 30th July 1916 | France | Admitted to 3CCS |
| 27th July – 4th August 1916 | France | Wounded in Action – gunshot wound right leg and left thigh |
| 26th March 1916 | France | Disembarked Marseille |
| 19th March 1916 | Egypt | Proceeded to join British Expeditionary Force from Alexandria on the Llandovery Castle |
| 14th March 1916 | Egypt | Re-joined Unit at Zeitoun from hospital |
| 7th March 1916 | Egypt | Conduct to the prejudice of good military order – at Ferry Post left ranks without permission. Award 48 hours FP#2 and 3 days pay |
| 14th January 1916 | Egypt | To hospital sick |
| 8th January 1916 | Egypt | Taken on Strength, Tel-el-Kabir |
| 25th October 1915 | Egypt | Disembarked Alexandria |
| 29th September 1915 | Australia | Departed Melbourne on RMS Osterley |
| 3rd August 1915 | Australia | Assigned to 5th Reinforcements 22nd Battalion |
| 19th July 1915 | Australia | Marched into Broadmeadows depot |

FIRST WORLD WAR TIMELINE