<Table> <Tr> <Th_colspan="2"> 3rd United States Infantry Regiment </Th> </Tr> <Tr> <Td_colspan="2"> 3rd Infantry coat of arms </Td> </Tr> <Tr> <Th> Active </Th> <Td> 3 June 1784--20 November 1946 6 April 1948--present </Td> </Tr> <Tr> <Th> Country </Th> <Td> United States of America </Td> </Tr> <Tr> <Th> Branch </Th> <Td> United States Army </Td> </Tr> <Tr> <Th> Type </Th> <Td> Infantry </Td> </Tr> <Tr> <Th> Role </Th> <Td> Memorial affairs, ceremonies and special events (two battalions) Stryker infantry (one battalion) </Td> </Tr> <Tr> <Th> Size </Th> <Td> Four battalions (three active) </Td> </Tr> <Tr> <Th> Garrison / HQ </Th> <Td> 1st Battalion--Fort Myer, VA 2nd Battalion--Fort Lewis, WA 4th Battalion--Fort Myer </Td> </Tr> <Tr> <Th> Nickname (s) </Th> <Td> "The Old Guard" </Td> </Tr> <Tr> <Th> Motto (s) </Th> <Td> Noli Me Tangere (English: Touch Me Not) </Td> </Tr> <Tr> <Th> Colors </Th> <Td> Buff and black (historical) </Td> </Tr> <Tr> <Th> March </Th> <Td> The Old Guard March </Td> </Tr> <Tr> <Th> Anniversaries </Th> <Td> 21 September - Organization Day </Td> </Tr> <Tr> <Th> Engagements </Th> <Td> Indian Wars * Hardin's Defeat * Battle of the Wabash * Battle of Fallen Timbers * Battle of Sugar Point War of 1812 * Siege of Fort Meigs * Battle of Fort Stephenson Mexican--American War American Civil War Spanish--American War Philippine Insurrection World War II Vietnam War Global War on Terrorism * Operation Iraqi Freedom * Operation Enduring Freedom </Td> </Tr> <Tr> <Th_colspan="2"> Commanders </Th> </Tr> <Tr> <Th> Current commander </Th> <Td> Colonel Jason T. Garkey </Td> </Tr> <Tr> <Th> Notable commanders </Th> <Td> Lieutenant Colonel Paul Octave Hébert Colonel Henry Leavenworth Lieutenant Colonel Ethan A. Hitchcock Colonel Benjamin Bonneville </Td> </Tr> <Tr> <Th_colspan="2"> Insignia </Th> </Tr> <Tr> <Th> Distinctive unit insignia </Th> <Td> </Td> </Tr> <Tr> <Th> Combat Service Identification Badge </Th> <Td> </Td> </Tr> <Tr> <Th> Distinctive Trimming (Buff Strap) </Th> <Td> </Td> </Tr> </Table> <Tr> <Th_colspan="2"> 3rd United States Infantry Regiment </Th> </Tr>

What is the role of the old guard at arlington national cemetery
find me the text answering this question