Field officer rank category (OF-3 to OF-5) of the Russian Imperial Army and Navy until 1917. The British Army (in which these officers are called officers of field rank), and some others in the Commonwealth (including the Australian Army and New Zealand Army), also include the brigadier in this category: the equivalent in other armies is a general officer (the brigadier general). Today, a field officer in the United States (here called field grade) Army, Marine Corps, and Air Force is typically a major, lieutenant colonel, or a colonel: Field officer A field officer, field-grade officer, or senior officer is an army,
Major general warfare center, training center, weapons center, or logistics center commanders, or senior directors on Air Force and joint staffs. In the case of the Air National Guard, they may also serve as The Adjutant General (TAG) for their state, commonwealth or territory. In Vietnam, the rank of major general is known as "thiếu tướng". It is used in the army and the air force. It is the equivalent to "chuẩn Đô đốc" in the Navy. The rank of "thiếu tướng" is the lowest general officer and flag officer rank, equivalent to a one-star general and admiral. In the Vietnamese People's