In Cornwall - these links might be useful...
Cornwall and WW1
Cornwall's War History: Name, unit, service number, age, year of birth, date of death, cause of death, memorials on which named, place of burial, parents and address, spouse and address remarks (which may include relatives who served, other regiments, etc). Also includes same details for WW2 deaths and subsequent conflicts and survivors of those conflicts.
Are you a school in Cornwall: If your school doesn't hold old registers or a Roll of Honour for those who lost their lives, check the County Records Office at https://www.cornwall.gov.uk/community-and-living/records-archives-and-cornish-studies/online-catalogues/
Cornwall's War History: Name, unit, service number, age, year of birth, date of death, cause of death, memorials on which named, place of burial, parents and address, spouse and address remarks (which may include relatives who served, other regiments, etc). Also includes same details for WW2 deaths and subsequent conflicts and survivors of those conflicts.
Are you a school in Cornwall: If your school doesn't hold old registers or a Roll of Honour for those who lost their lives, check the County Records Office at https://www.cornwall.gov.uk/community-and-living/records-archives-and-cornish-studies/online-catalogues/