HistoryData
war1937

1937 Militar offense during Spanish Civil War

September 6, 1937

The Republican defense of El Mazucu delayed the Nationalist conquest of Asturias and is considered among the first uses of carpet bombing against a military target.

Quick Facts

Year
1937
Category
war

Key Facts

Duration
6–22 September 1937
Force disparity
Republicans outnumbered sevenfold
Notable first
Among first uses of carpet bombing on a military target
Campaign
War in the North
Strategic consequence
Led to fall of Gijón and loss of Asturias

Location

Map of El Mazucu, SpainMap of El Mazucu, SpainEl Mazucu, Spain

Cause → Event → Consequence

Cause

As part of the broader Nationalist War in the North campaign in 1937, Nationalist forces sought to advance into eastern Asturias and link up with columns moving from León, aiming to eliminate the last Republican-held territory in north-west Spain.

Event

Between 6 and 22 September 1937, Republican forces defended El Mazucu and the surrounding mountains against a much larger Nationalist army. Despite being outnumbered sevenfold and subjected to what is considered among the first uses of carpet bombing against a military target, the defenders held out for weeks over extreme terrain before being overwhelmed.

Consequence

The Nationalist forces, having broken through at El Mazucu, were able to link up with their columns advancing from León. This connection led directly to the fall of Gijón and the complete abandonment of Asturias, ending Republican resistance in north-west Spain.

Belligerents & Mobilization Analysis

Side A

1 belligerent

Spanish Republic

Side B

1 belligerent

Nationalist Spain
Outcome
Nationalist victory; Republicans eventually overwhelmed after weeks of resistance, leading to fall of Gijón and loss of Asturias

Timeline Context

Timeline around 19371937193419351936193819391940Mass arrests and executions of Estonians in the USSRParliamentary revolt in Canada1937-38 Soviet ethnic cleansing of Poles1937 part of the Spanish Civil War1937 South American Championship — football tournamentWorld Chess Championship 1937 — 1937 chess championship in the NetherlandsNanjing Massacre — 1937 mass murder by the Japanese army1937 battle of the Second Sino-Japanese Warbattle-of-el-mazucu-1937