Information is posted by Family Tree Magazine (UK) about opening wartime records for seven days. The link below to the UK site appears to work from Canada.
The offer allows users unlimited record views and searches. Featured collections include:
- British Army World War I service records
- Royal Navy registers of seamen
- UK World War I Women’s Army Military Corps
Explore for free at Ancestry. For full terms & conditions for this Ancestry offer, click here.
UPDATE
The same access is now available from the Canadian Ancestry site at https://www.ancestry.ca/c/remembrance/. Here is the list of all of the records collections that are free: https://www.ancestry.ca/search/categories/ca_remembrance_2023/?o_iid=130986&o_lid=130986&o_sch=Web+Property
It appears the UK free access stays available after the Canadian closes,