A costly, inconclusive battle that prevented Nationalist forces from cutting Madrid's supply lines along the Jarama River in early 1937.
Key Facts
- Date range
- 6–27 February 1937
- Location
- Jarama River valley, east of Madrid
- Nationalist forces
- Spanish Legion and Moroccan Regulares (Army of Africa)
- Republican forces
- Army of the Centre, including International Brigades
- Outcome
- Inconclusive; no breakthrough achieved by either side
Location
Cause → Event → Consequence
General Francisco Franco's Nationalist forces sought to sever Republican supply and communication lines running along the Jarama River east of Madrid. Capturing this corridor would effectively encircle the Republican-held capital and potentially force its surrender during the Spanish Civil War.
From 6 to 27 February 1937, elite Nationalist units including the Spanish Legion and Moroccan Regulares attacked Republican positions along the Jarama River. They initially pushed back the Republican Army of the Centre and the International Brigades, but sustained resistance prevented any decisive breakthrough despite fierce and prolonged fighting on both sides.
The battle ended inconclusively, with both sides suffering heavy casualties and neither achieving its strategic objectives. The Republican lines held, Madrid's supply routes remained open, and the front stabilized in a position broadly similar to where the fighting had begun, marking a failure for Nationalist encirclement strategy.
Belligerents & Mobilization Analysis
Side A
1 belligerent
Francisco Franco.
Side B
1 belligerent