Field-grade officer and Staff officer

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

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

Staff officer noun - A commissioned officer assigned to a military commander's staff.

Field-grade officer and staff officer are semantically related. (American) Sometimes you can replace phrase "Field-grade officer" with "Staff officer", this phrases are similar.