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