page_title: List of armed conflicts involving the United States
section_title: 21st-century
hierarchical_section_title: List of armed conflicts involving the United States / 21st-century
caption_attribution_description: English: U.S. Marine Sgt. Joseph Bergeron, a task force combat engineer, explains combat marksmanship tactics to a group of Ugandan soldiers, Feb. 27. Special Purpose Marine Air Ground Task Force 12 sent a small team of Marines into Uganda, Feb. 3, to train Ugandan forces for the fight against al-Shabaab in Somalia and the hunt for Joseph Kony and the Lord’s resistance army.
context_page_description: The history of armed conflicts involving the United States of America spans a period of more than four centuries. A period ranging from the early era of European colonization and the formation of the new national polity that is to become the United States, to its evolvement through technological and political upheavals into a decisively modern republic and military force, and ascent onto the world stage, through the calamities of the 20th century, as the largely unrivaled imperial superpower that it is today.
caption: U.S. Marine Sgt. Joseph Bergeron, a task force combat engineer, explains combat marksmanship tactics to a group of Ugandan soldiers.
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