The clustering of reinforcement particles is also known to play an important role in influencing the mechanical properties of ceramic- and metal-matrix composites. Clustering, or the loose agglomeration of reinforcement particles, reduces the volume of matrix between the particles and can lead to the formation angular porosity, which is a source of crack initiation, as well to very high localized stresses. Although clustering can occur in the fabrication of discontinuously reinforced composites with any type of particle size, it tends to be found in greater propensity in composites containing smaller particulates; in part because of greater difficulty in keeping the reinforcement well mixed and dispersed either during processing. We have used a chemical synthesis approach known as the glycine-nitrate combustion synthesis process (GNP) to prepare a model series of ceramic-metal composite powders. By carefully adjusting the ratio of the reactants in the process, it is possible to synthesize both CMC and MMC type powders with a unifrom dispersion nanoscale reinforcement particles. The steps involved in processing and the cermet materials that the process yields will be discussed in detail.