Myles Standish was the military leader of Plymouth Colony from the beginning. He was officially designated as the captain of the colony's militia in February 1621, shortly after the arrival of the "Mayflower" in December 1620. He organized and led the first party to set foot in New England, an exploratory expedition of Cape Cod upon arrival in Provincetown Harbor. He also led the third expedition, during which Standish fired the first recorded shot by the Pilgrim settlers in an event known as the First Encounter. Standish had training in military engineering from the University of Leiden, and it was he who decided the defensive layout of the settlement when they finally arrived at Plymouth. Standish also organized the able-bodied men into military orders in February of the first winter. During the second winter, he helped design and organize the construction of a large palisade wall surrounding the settlement. Standish led two early military raids on Indian villages: the raid to find and punish Corbitant for his attempted coup, and the killing at Wessagussett called "Standish's raid". The former had the desired effect of gaining the respect of the local Indians; the latter only served to frighten and scatter them, resulting in loss of trade and income.