upper echelon and supporting maintenance SOPS
guides conducts acts serves
The answer is in AR 750-1
Sopped.
SOPs is the plural of SOP (Standard Operating Procedure); SOP's, the "s" could be the abbreviation of the genitive case or of the to be verb.
Standard Operating Procedure.
sops
Standardization
It depends on what component maintenance manual you are referring to? Any maintenance manual is a guide to maintaining something, probably giving step-by-step instructions. A typical example are the many maintenance guides produced for owners of specific cars - which give detailed DIY home maintenance instructions.
Standarize routine
Simplicity and Compleness
The Department of Soil sciences website offers several articles on septic tank maintenance. Many homebuyers guides and websites also offer detailed explanations on septic tanks and their recommended maintenance.