The size and composition of these allied forces remains in dispute. Santosuosso argues that "foederati" regiments consisted mostly of cavalry that were raised both as a temporary levy for a specific campaign need and, in some cases, as a permanent addition to the army. Hugh Elton believes that the importance of "foederati" has been overstated in traditional accounts by historians such as A.H.M. Jones. Elton argues that the majority of soldiers were probably non-Italian Roman citizens, while Santosuosso believes that the majority of troops were almost certainly non-citizen "barbari".