A comparison was performed between the energy deposition predicted by the LAHET code system (LCS) and experimental values for 800-, 1000-, and 1200-MeV Protons on targets composed of beryllium, carbon, aluminum, iron, copper, lead, bismuth, and uranium. The lead, bismuth, and uranium targets showed agreement within ∼10% at locations throughout the targets, and the agreement of the total energy deposited over the axial length of the targets ranged from 1 to 18%. For the lighter materials, the agreement at locations throughout the target was within ∼25%. No definable trend could be determined for the lighter materials because some LCS predictions were greater and some were less than the experimental results, and some showed very good agreement. Also, the LCS underpredicted the proton ranges for 800-MeV protons on iron, 800- and 1000-MeV protons on copper, and 800- and 1000-MeV protons on uranium.