Army Techniques Publications (ATP) 4-0.6, Techniques for Sustainment Information Systems Support, provides information and techniques on sustainment information systems support. The ATP gives the reader an understanding of the organizations available to provide support and the techniques used to obtain the support. The principal audience for ATP 4-0.6 is personnel of all grades and levels performing in sustainment information support positions. It is also applicable to personnel assigned to operations commands and staffs and provides both of these groups with information necessary to conduct effective sustainment information support planning and operations. Commanders, staffs, and subordinates ensure their decisions and actions comply with applicable U.S., international, and, in some cases, host-nation laws and regulations. Commanders at all levels ensure their Soldiers operate in accordance with the law of war and the rules of engagement. (See Field Manual FM] 27- 10.) ATP 4-0.6 uses joint terms where applicable. Selected joint and Army terms and definitions appear in both the glossary and the text. ATP 4-0.6 does not introduce, modify or rescind any Army terms. It does rescind one acronym as indicated in the introduction of the publication. ATP 4-0.6 applies to the Active Army, Army National Guard/Army National Guard of the United States, and United States Army Reserve unless otherwise stated. The proponent of ATP 4-0.6 is the United States Army Combined Arms Support Command (USACASCOM).