Battle of Dagu Forts ( 1900 ) The Battle of Taku or Dagu Forts was a battle during the Boxer Rebellion between Chinese military and allied Western and Japanese naval forces . The Allies captured the Forts after a brief but bloody battle . Background . In mid - June 1900 , allied forces in northern China were like islands in a hostile sea . In Beijing there were 450 marines from eight countries protecting the diplomatic legations . Somewhere between Tianjin and Beijing were the 2 , 000 men in the Seymour Expedition which was attempting to get to Beijing to reinforce the legation guards . In Tianjin were 2 , 400 Allied soldiers , mostly Russians . All of these forces were menaced by thousands of Boxers , members of an indigenous peasant movement that aimed to end foreign influence in China . The Qing government of China was wavering between supporting the Boxers in their anti - foreign crusade or suppressing them because they represented a threat to the dynasty . A few miles offshore in the Yellow Sea were a large number of Western and Japanese warships . Chinese forces deployed a weapon called " electric mines " on June 15 , at the Peiho river before the battle , to prevent the western Eight - Nation Alliance from sending ships to attack . With their supply and communication lines to Tianjin threatened the commanders of the ships met on June 16 . Control of the Dagu forts at the mouth of the Hai River were the key to maintaining a foothold in northern China . Vice - admiral Hildenbrandt , from the Imperial Russian Navy , through Leutnant Bakhmetev , sent a message to the commander of the forts , who then sent a message by telegraph to the Governor of Chihli province , stating that they proposed to “ occupy provisionally , by consent or by force ” the Dagu Forts and demanded that Chinese forces surrender the forts before 2 a . m . on June 17 . Of the seven Western countries and Japan represented only the United States Navy ’ s Rear Admiral Louis Kempff demurred , stating that he had no authority to undertake hostilities against China . Kempff said that an attack was an " act of war " , and therefore refused to participate . However , Kempff agreed that an ancient American gunboat , the " Monocacy " , could be stationed near the forts as a place of refuge for civilians in the vicinity . It was an audacious demand by the foreign sailors . Only ten small ships , including the non - combatant " Monocacy " , could cross over the banks at the river ’ s mouth to enter the Hai River – two hundred yards wide — from where the four forts could be occupied or assaulted . Only 900 men could be assembled to undertake the operation . By contrast the Chinese soldiers and sailors in the forts and on several modern gunboats docked along the river consisted of about 2 , 000 men . The Chinese also began laying mines near the mouth of the river and installing torpedo tubes in the forts . In the evening of June 16 , the foreign warships began entering the river and taking up their stations from which the Dagu Forts could be occupied or assaulted . The Battle . The Chinese did not wait for the expiration of the deadline but opened fire from the forts with every single gun at the Allied ships simultaneously at about 00 : 45 on June 17 . The Russian gunboat " Koreetz " was heavily damaged in the opening salvo . The " Monocacy " , despite its distance from the battle and the assurances of its officers to the 37 women and children aboard that they were “ in a position of absolute safety ” took a Chinese shell in its bow which hurt nobody . The Captain quickly moved the " Monocacy " to a safer position . Chinese gunnery from the forts aimed at the ships was accurate , also hitting HMS " Whiting " , SMS " Iltis " , and " Lion " and driving " Giliak " aground . The Russians turned on the searchlight of Gilyak , exposing them to Chinese guns . The Gilyak and another ship were severely damaged . Eighteen Russians died with 65 others receiving wounds . The most serious offensive threat to the allied attack were four modern German - built torpedo destroyers laying alongside the dock at Dagu . These gunboats could have easily overpowered the Allied ships , but inexplicably they remained docked even after the Chinese opened fire . Two British destroyers , HMS " Whiting " and HMS " Fame " ( the former commanded by Lt Colin Mackenzie and the latter by Roger Keyes ) , each towing a whaleboat with 10 men aboard , darted alongside the Chinese ships and boarded them . The Chinese only offered weak resistance before fleeing and leaving their ships in the hands of the British . The artillery duel continued inconclusively until nearly dawn when the allies stripped their ships of crew and mounted a ground assault on the Northwest Fort . Two hundred Russians and Austrians led the way followed by 380 British and Italians with 300 Japanese bringing up the rear . In a bit of luck for the allies , the powder magazine exploded just as the ground assault began and in the confusion afterwards the Japanese had the honor of storming the fort . The British and Italians then led the way on the assault of the North Fort which was soon captured . Two forts remained on the south side of the river . The allies turned all their guns , and the guns in the two Chinese forts they had captured , on these two forts , blew up another powder magazine in one , and shortly the Chinese soldiers abandoned the forts . The allied ground force then crossed the river and captured the forts with almost no opposition . The battle of the Dagu Forts was over at 6 : 30 a . m . The allies had suffered 172 casualties among the more than 900 soldiers and sailors engaged . The number of Chinese casualties is unknown but the forts were described as flowing in “ rivers of blood . ” However , Robert B . Edgerton says that Chinese casualties were " probably not heavy " . Impact . The attack by the allied navies on the Dagu Forts had a profound impact . The first reports of the battle arriving in Beijing from Governor Lu Yu in Tianjin emphasized the positive – and failed to mention to the Dowager Empress Cixi that the allies had captured the forts . The battle pushed the Qing government definitively to the side of the Boxers and the Chinese army was instructed to resist foreign military forces on Chinese soil . The next day , June 18 , Admiral Seymour and his two thousand men were attacked by the Chinese army along the railroad running from Tianjin and Beijing and Seymour decided to abandon his objective of reaching Beijing and instead retreated to Tianjin . On June 19 , an ultimatum was delivered to the diplomats in the Legation Quarter in Beijing informing them that they had 24 hours to depart the capital . When the foreigners refused to leave , fearing for their safety , the Siege of the Legations began on June 20 . The Dagu forts remained in foreign hands for the remainder of the Boxer Rebellion . Allied officers praised the courage and skill the Chinese soldiers had demonstrated in defending the Dagu Forts . Previously derided for cowardice and incompetence , the Chinese began to gain a measure of respect from their opponents .