Spartanism, allocation, allotment, apportionment, arrangement, array, arraying, astringency, austerity, authoritarianism, collation, collocation, constitution, demandingness, deployment, discipline, disposal, disposition, distribution, exactingness, form, formation, formulation, grimness, harshness, marshaling, meticulousness, order, ordering, placement, rigid discipline, ruggedness, severity, sternness, strictness, stringency, structuring, syntax, toughness

For further exploring for "regimentation" in Webster Dictionary Online