Source: Facebook post by Jason Flook at the 18th Battalion Facebook Group.
His brother, Lieutenant Albert James John Flook MM, was Killed in Action on September 27, 1918. Another brother, Private Christopher Flook, reg. no. 189802, served also with the 18th Battalion.
Summary of Service for Private William George Flook, reg. no. 189801
| Date | Event | Remarks |
| April 21, 1896 | Born | Attestation paper indicates born in London, England. |
| Circa 1914 | Serves with the 24th Kent Regiment | Per service records. Shows that he was active with this regiment from August 13, 1914 to September 18, 1914 and was shown on the 1st Battalion paylists. |
| January 4, 1916 | Enlists | Enlist in St. Thomas, Ontario with the 91st Battalion with the regimental number of 189801.
Private Flook indicates that his current address is 45 Brisco Block, Chatham, Ontario and that is also where his identified next-of-kin, Francis Flook (wife), resides.
His trade or calling is that of a foreman. |
| February 6, 1916 | St. Thomas, Ontario | Hospitalized for bronchitis. |
| February 28, 1916 | St. Thomas, Ontario | Transferred from the 91st Battalion to the 186th Overseas Battalion. |
| May 27, 1916 | Probably St. Thomas, Ontario | Appointed Acting/Corporal of Bugle Band. |
| June 22, 1916 | London, Ontario | Hospitalized for an unknown condition. |
| September 18, 1916 | Camp Borden, Ontario | Hospitalized for nephritis, inflammation of the kidneys. |
| February 28, 1917 | Submits Will | Names his wife, Francis Flook, as beneficiary. |
| March 25, 1917 | Embarks via Halifax for England | Aboard the S.S. Lapland. |
| April 1, 1917 | Assigns $20.00 per month of pay to his wife. | She also received $20.00 per month separation allowance from January 1917 to December 1918. |
| April 4, 1917 | Debarks Liverpool, England. | |
| April 4, 1917 | Transferred to 4th Reserve Battalion | Bramshott, England |
| August 26, 1917 | Transferred to 18th Battalion | Heads to the Continent. |
| August 27, 1917 | Arrives 2 Canadian Infantry Brigade Depot, Etaples, France | |
| September 5, 1917 | Joins 18th Battalion “In the Field”. | The Battalion is in the BEAURAIN Sector between CHERISY and WANCOURT in Brigade Support. |
| March 18, 1918 | Granted 14 Days Leave to the U.K. | |
| October 11, 1918 | Killed in Action at Iwuy |
History of the 18th Battalion CEF, "The Fighting Eighteenth" 