Yes. Henry Allingham, who died aged 113, and is buried in Brighton, joined the Navy in 1915, as part of the RNAS, was at the Battle of Jutland, and then transferred to the newly formed RAF.
The Royal Navy still has the Fleet Air Arm, despite giving some of their pilots from the Royal Naval Air Service (RNAS) to combine with the Royal Flying Corps(Army, to form the RAF in 1918.
The answer is Navy.
Princess Anne never served, but wears medals, when she wears Naval uniform as Commandant of the women in the Royal Navy.
Not all medals are combat related, such as the more recent Jubilee medals.
Congratulations to our newest service, who celebrate 100 years today.
It's all on BBC1 this morning, service at Westminster Abbey, march up the Mall, presentation of Queen's colours, and a huge fly past approx noon.
I've just watched a remarkable interview with Squadron Leader Dick Churchill...