1904: On 31 March, a British military expedition advancing into southern Tibet clashed with a ragtag defence force near the village of Guru. Tibetan muskets were no match for Maxim machine guns, and amulets offered no protection against shrapnel. “A hail of bullets came down on us,” wrote one of the defenders. “The sound of firing continued for the length of time it would take six successive cups of hot tea to cool.” In that brief time, 628 Tibetans were killed and 222 wounded.
Source: Patrick French, Younghusband: The Last Great Imperial Adventurer (1994), pp. 221, 224