Keywords: ANU INS.svg APP-6A/MIL-STD-2525A-B symbol frame for affiliation assumed neutral this affiliation is currently missing from the standard ; battle dimension ground installation Strictly speaking field AC Installation Graphic Modifier isn't part of the frame but it is more convenient to render it as such The question mark belongs to field E Frame Shape Modifier APP-6A MIL-STD-2525B Change 1 2007-06-21 User Urhixidur Reference Thibault D U ; Commented APP-6A - Military Symbols for Land Based Systems Defence R D Canada “ Valcartier Technical Note TN 2005-222 2005-08-01 APP-6A |