It must be a very poignant moment for the Queen during the D-Day 75th Anniversary Commemorations. HM also lost her Uncle (George, the Duke of Kent) during WWII.
She probably worried about Philip too as he was in the Royal Navy during the war.
On a lighter note the HM trained as a driver & mechanic with the Auxiliary Territorial Service during the war.
One can quite imagine Philip saying, "I knew that she was the woman for me when I found out that she could strip an engine." (If he was ever asked what attracted him to the Princess Elizabeth as she was then.)