page_title: Fortress of Humaitá
hierarchical_section_title: Fortress of Humaitá
caption_attribution_description: English: The river bend at the Humaitá fortress Español: La vuelta de Humaitá
context_page_description: The Fortress of Humaitá, known metaphorically as the Gibraltar of South America, was a Paraguayan military installation near the mouth of the River Paraguay. A strategic site without equal in the region, "a fortress the likes of which had never been seen in South America", it was "the key to Paraguay and the upper rivers". It played a crucial role in the deadliest conflict in the continent's history – the Paraguayan War – of which it was the principal theatre of operations.
  The site was a sharp horseshoe bend in the river; practically all vessels wishing to enter the Republic of Paraguay – and indeed to steam onwards to the Brazilian province of Mato Grosso – were forced to navigate it. The bend was commanded by a 6,000-foot line of artillery batteries, at the end of which was a chain boom which, when raised, detained the shipping under the guns. The navigable channel was only 200 yards wide and ran in easy reach of the artillery.
context_section_description: The Fortress of Humaitá (1854–68), known metaphorically as the Gibraltar of South America, was a Paraguayan military installation near the mouth of the River Paraguay.  A strategic site without equal in the region, "a fortress the likes of which had never been seen in South America", it was "the key to Paraguay and the upper rivers".  It played a crucial role in the deadliest conflict in the continent's history – the Paraguayan War – of which it was the principal theatre of operations.
   
  The site was a sharp horseshoe bend in the river; practically all vessels wishing to enter the Republic of Paraguay – and indeed to steam onwards to the Brazilian province of Mato Grosso – were forced to navigate it.  The bend was commanded by a 6,000-foot (1.8 km) line of artillery batteries, at the end of which was a chain boom which, when raised, detained the shipping under the guns. The navigable channel was only 200 yards wide and ran in easy reach of the artillery.  The fortress was protected from attack on its landward side by impenetrable swamp or, where this was lacking, defensive earthworks which, at their greatest extension, comprised a system of trenches stretching for 8 lineal miles (13 km), had a garrison of 18,000 men and deployed 120 cannon. At its zenith Humaitá was reputed to be impassable to enemy shipping.
  The widespread perception which it created in its heyday – that Paraguay was a country difficult to invade – may have induced its Marshal-President Francisco Solano López to take unnecessary risks in foreign policy and, in particular, to seize government vessels and provinces of the much more populous Brazil and Argentina and to send armies to invade them and Uruguay.  They united against him in the Treaty of the Triple Alliance.  The war led to his country's utter defeat and ruin and the casualties were immense.
  A declared purpose of the Treaty of the Triple Alliance was the demolition of the Humaitá fortifications and that none others of that sort should be built again. However the fortress, though not by then invulnerable to the latest armour-plated warships, was a serious obstacle to the Allies’ plans to proceed upriver to the Paraguayan capital Asunción and to recapture the Brazilian territory of Mato Grosso: it delayed them for two and a half years. It was taken in the Siege of Humaitá (1868), then razed pursuant to the Treaty.
  For present-day Paraguayans Humaitá is a symbol of national pride, standing for their country's unyielding will to resist.
caption: The river bend at the Humaitá fortress.  An invading flotilla would have to steam for more than a mile against the current (shown by arrow) while being detained – by the chain boom – under short-range battery fire. But the greatest danger was from improvised contact mines.
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