Sentence 1: Between 1937 and 1957 , Squadron was a unit of the British Auxiliary Air Force and later of the Royal Auxiliary Air Force .
Sentence 2: 615 ( County Surrey ) Squadron was one unit of the British Royal Auxiliary Air Force and later of the Auxiliary Air Force between 1937 and 1957 .
Question: Do Sentence 1 and Sentence 2 express the same meaning? Yes or No?