When: early 1945
Searched: Google and Wikipedia on "'US Navy' + insignia", plus various historical websites
I'm gnawing on an idea for a mystery that takes place in Washington D.C. in very early 1945.
1) The focus character is a Marine major, and part of the plot involves him recognizing the (qualification ?) badge of someone assigned to Naval Intelligence.
I have found a site which shows something involving a magnifying glass crossed by a quill pen; however this is in a section of cloth badges for enlisted personnel. There is nothing explicitly pertaining to officers.
2) I have found a picture of W.A.V.E.S. training with a .22 caliber pistol. Given they could not, by law, serve off of U.S. soil and were with rare exception assigned to the continental United States ... were they issued a pistol/holster, or permitted to buy same?