This biological weapon was used by British commander Lord Jeffrey Amherst and Swiss British officer Colonel Henry Bouquet when the British first started coming to America and they were fighting with the Indians for land. The British gave the Indians blankets with the smallpox virus on it. What the british were hoping for was that since the Indians never even heard of smallpox and never had it, the virus would kill off the whole population of indians and they would be able to have all the land in North America