The proliferation of incompatible simulation data recording formats in the Distributed Interactive Simulation (DIS) community has consistently been a burden to implementors of DIS, to analysts, and to operational DIS sites. In response to this situation, the co-authors of this paper developed and implemented a prototype standard datalogger interchange format at the I/ITSEC 1994 DIS interoperability demonstration. Feedback from this I/ITSEC 1994 event has resulted in the revision of the prototype format into the current DIS Logger Interchange Format (DLIF-95) draft standard. DLIF-95 is intended to provide the mechanism for the entire DIS community to archive and exchange recorded simulation data efficiently and with confidence. This paper describes the DLIF-95 draft standard, the rationale behind its creation and the lessons learned in its implementation