The Differences Between Tier 1, Tier 2 and Tier 3 in the US Military

US Military

The term Tier 1 (Tier One) in the United States military is often referred to as the Special Mission Unit or Special Missions Unit (SMU). It is particularly used to describe some military Special Operations Forces. Special mission units have been involved in high-profile military operations such as Operation Neptune Spear .

Credit US Military News

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