File Extension IWD File Format Call of Duty file IWD stands for Call of Duty file. This was last updated in March 2012 By Margaret Rouse Browse File Extensions Alphabetically: A B C D E F G H I J K L M N O P Q R S T U V W X Y Z # Ask a Question. Find an Answer. Ask your peers a question about this file extension. Ask a Question ILE RPG call to ILE COBOL passing large array How to acheive FULL OUTER JOIN on three files in IN SQLRPGLE program. What is the role of a network administrator?