Which document is described as establishing the army's principle doctrine for supporting operations?

Which document is described as establishing the army's principle doctrine for supporting operations?

• A. TC 3-22.9
• B. ADPO 4-0
• C. FM 3-0
• D. ATP 6-02

Answer: (B)

The main idea is identifying which doctrine codifies how the Army keeps its forces supplied, maintained, and protected in order to operate effectively—sustainment. ADPO 4-0 is the Sustainment publication, and that’s what sets the army’s principle guidance for supporting operations. It lays out the sustainment functions—logistics, maintenance, transportation, field services, health services, personnel services, and related planning and execution tasks—and shows how they’re integrated with operations to keep forces capable and ready. It explains how sustainment supports the mission, coordinates across echelons and with joint and multinational partners, and ensures continuity of operations even under pressure. The other documents cover different topics: one is focused on a specific skill (marksmanship), another on general operations at a broader level, and another on a different aspect or level of doctrine. They do not establish the formal, overarching sustainment framework that enables forces to stay operational in supporting operations, which is why the sustainment publication is the best fit for this description.

The main idea is identifying which doctrine codifies how the Army keeps its forces supplied, maintained, and protected in order to operate effectively—sustainment. ADPO 4-0 is the Sustainment publication, and that’s what sets the army’s principle guidance for supporting operations. It lays out the sustainment functions—logistics, maintenance, transportation, field services, health services, personnel services, and related planning and execution tasks—and shows how they’re integrated with operations to keep forces capable and ready. It explains how sustainment supports the mission, coordinates across echelons and with joint and multinational partners, and ensures continuity of operations even under pressure.

The other documents cover different topics: one is focused on a specific skill (marksmanship), another on general operations at a broader level, and another on a different aspect or level of doctrine. They do not establish the formal, overarching sustainment framework that enables forces to stay operational in supporting operations, which is why the sustainment publication is the best fit for this description.