The Symposium on Effects of Environment and Complex Load History on Fatigue Life was presented at the Fall Meeting of ASTM held in Atlanta, Ga., 29 September–4 October, 1968. Committee E09 on Fatigue sponsored the symposium. M. S. Rosenfeld, U.S. Naval Air Engineering Center, was responsible for the session on Cumulative Damage and Life Estimation. S. R. Swanson, MTS Systems, was responsible for the session on Fatigue Under Random Loads. D. W. Hoeppner, Battelle Memorial Institute and R. I. Stephens, University of Iowa, were responsible for the two sessions on Influence of Environment on Fatigue.