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O-3 to O-4 (Field Grade) · Army
What you really do day-to-day in this MOS at this rank.
Tips for excelling — technical skills, leadership, admin, and culture.
What people at this rank typically get wrong.
Books, regs, courses, and resources worth your time.
What a typical day actually looks like.
Key choices you face and how to think about them.
How the job varies across unit types (infantry div, FORSCOM, TRADOC, etc).
What to expect and how to prepare for the next rank.
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