Commissioned military officer and Field-grade officer

Commissioned military officer noun - A commissioned officer in the Army or Air Force or Marine Corps.

Field-grade officer and commissioned military officer are semantically related. In some cases you can replace phrase "Field-grade officer" with "Commissioned military officer", this phrases are similar.

Field-grade officer noun - An officer holding the rank of major or lieutenant colonel or colonel.

Commissioned military officer and field-grade officer are semantically related. You can use "Commissioned military officer" instead a noun phrase "Field-grade officer".