The First World War medals and the Military Medal would all have been engraved with serial number, rank, Name and Initials as well as their unit.
This will help in a search for information, even if some official government records have been lost there may still be entries and information at the Units they served with by contacting the Units Museum.
The Rosettes on the ribbon bars in question denote there was a bar issued with each one plus the medal.
Mention in despatches is denoted as an Oak Leaf .
Two very brave soldiers
Much respect