In 1937, during the Spanish Civil War

Spanish Civil War

The Spanish Civil WarAlso known as The Crusade among Nationalists, the Fourth Carlist War among Carlists, and The Rebellion or Uprising among Republicans. was a major conflict fought in Spain from 17 July 1936 to 1 April 1939...

, Italians from the Corpo Truppe Volontarie

Corpo Truppe Volontarie

The Corps of Volunteer Troops was an Italian expeditionary force which was sent to Spain to support General Francisco Franco and the Spanish Nationalist forces during the Spanish Civil War...

 began to serve in mixed Italo-Spanish Flechas (Arrows) units where the Italians provided the officers and technical personnel, while the Spanish served in the rank-and-file. One, the Flechas Azules Mixed Brigade "Blue Arrows" first served in Extremadura

Extremadura

Extremadura is an autonomous community of western Spain whose capital city is Mérida. Its component provinces are Cáceres and Badajoz. It is bordered by Portugal to the west...

 from April 1937 to the end of the War in the North

War in the North

The War in the North, in the Spanish Civil War was the campaign in which the Nationalist forces defeated and occupied the parts of northern Spain that remained loyal to the Republican government. The campaign included several separate battles. The Battle of Bilbao resulted in the loss of the part...

.

Order of Battle, April 1937

Flechas Azules Brigade - Col. Mario Guassardo

• 1st Regimient
  • 1st Battalion
  • 2nd Battalion
  • 3rd Battalion
• 2nd Regimient
  • 1st Battalion
  • 2nd Battalion
  • 3rd Battalion
• Assault Battalion
  • 1st Company
  • 2nd Company
• Artillery Group
  • X Group 75/27
  • Battery 20mm AA

Order of Battle, Aragon Front 1938

Flechas Azules Brigade - Col. Mario Guassardo

• 3rd Regimient
  • 1st Battalion
  • 2nd Battalion
  • 3rd Battalion
  • Battery 65/17
• 4th Regimient
  • 1st Battalion
  • 2nd Battalion
  • 3rd Battalion
  • Battery 65/17
• Assault Battalion "As"
• Artillery Group
  • Xº Group de 75/27
  • Bía de 20mm
  • Bía de 37mm
• Engineer Company
• Military Police Section
• Intendencia Section
• Sanitation Section
• Division Truck Unit

The Flechas Azules Brigade was later used to form the Flechas Verdes Division

Flechas Verdes Division

The Flechas Verdes Division was a division of the Spanish army. The name means "Green Arrows" in Spanish. It was created when the Flechas Azules Mixed Brigade was expanded into two division-sized units: the Flechas Verdes and Flechas Azules Divisions. The Flechas Verdes Division served in the...

 and Flechas Azules Division

Flechas Azules Division

Flechas Azules Division was created when the Flechas Azules Mixed Brigade was expanded into two Division sized units the Flechas Azules and Flechas Verdes Divisions. The Flechas Azules Division served in the Catalonia Offensive, the final offensive of the Spanish Civil War...

in late 1938.

Source

• de Mesa, José Luis, El regreso de las legiones: (la ayuda militar italiana a la España nacional, 1936-1939), García Hispán, Granada:España, 1994 ISBN 84-87690-33-5