The bloodless capture of Guam began with a misunderstanding over a supposed military salute.
In short: In 1898, the U.S. Navy arrived at Guam expecting a fierce battle against fortified Spanish defenses. Instead, they found a garrison completely unaware that war had been declared. When the Americans fired their guns, the Spanish officials assumed it was a friendly salute and apologized for lacking ammunition to return it.
The capture of Guam was a brief, bloodless affair during the Spanish–American War. Captain Henry Glass, commanding the USS Charleston, arrived in June 1898 with orders to seize the island. Because Guam had been neglected by Spain since 1668, the local authorities had received no communication from their government since April 1898. Consequently, the Spanish garrison remained entirely ignorant of the global conflict.
American intelligence had been unreliable, leading Glass to fear the island was heavily fortified and guarded by over a thousand soldiers. In reality, the defenses were in disrepair. When the Charleston fired 13 rounds at the fort, the Spanish officials—including the captain of the port and a naval surgeon—rowed out to the ship to apologize for their inability to return the salute. Glass stunned them by clarifying that the shots were hostile and that the two nations were at war.
The subsequent surrender was swift. After Glass issued an ultimatum, Governor Don Juan Marina capitulated, and 54 Spanish regulars were disarmed. Glass chose not to destroy the island's forts, deeming them too dilapidated to matter. Following the transfer of coal and the appointment of local merchant Francisco Portusach as interim governor, the American fleet departed for Manila. The island was formally ceded to the United States in the December 1898 Treaty of Paris, beginning a long period of naval administration that only shifted toward local self-governance in 1968.
This event highlights the isolation of colonial outposts in the late 19th century. Despite the strategic importance of the Pacific, the lack of modern communication left the Spanish garrison completely vulnerable to a force that had spent weeks preparing for a battle that never materialized. The capture remains a singular, almost farcical moment in the broader context of the Spanish–American War.
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- Summary by Intellect · source: Capture of Guam
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