Brazilian Army the "General de Exército" (), a "four-star" general. In times of war, or in exceptional circumstances, a fifth star may be worn by the highest-ranking officer in the army, who is then promoted to "Marechal", (). Brazilian Army officers wear rank insignia on shoulder boards and the army has ten officer ranks, also known as "grades", excluding that of an officer candidate. Brazilian Army officer ranks from second lieutenant to colonel equate directly with counterparts in the United States Army, but thereafter the systems diverge. A Brazilian "General de Brigada" () wears two stars, with duties equivalent to a U.S.
United States Air Force officer rank insignia the Air Force Henry H. Arnold. Federal law currently contains no provisions to promote an officer to five-star grade. On the Air Force Mess Dress uniform, officer rank insignia are embroidered in silver or gold thread on detachable shoulder boards which are attached to the mess dress jacket. No rank insignia are worn on the mess dress shirt. On the service dress uniform, metal rank insignia pins are worn on the epaulets of the Air Force Blue service dress jacket. Rank insignia are also worn on epaulets which slide onto the epaulet loops on the light blue shirt; the rank