Hello
Looking at some of your photos it seems you are after service records for WW11. You will not find any of these online as they are still held by the MoD.
You can order them but you will need a death certificate for each person and 30 pounds for each one.
This link tells you who can order and what information you will get. It also has the application forms to download.
https://www.gov.uk/guidance/requests-for-personal-data-and-service-records If you are searching for WW1 service records these are available on ancestry and Findmypast both of which are pay per view sites but your local library may have the free version of one or both.
However be aware that 60 % plus of WW1 service records were destroyed in WW11 by bombing/fire and water damage.
Records that do survive are the Medal Roll Index Cards and the Medal and Award rolls. These will give you the regiment/battalion and regiment numbers and medals awarded but no personal information. So it may be very difficult identifying those with common names.