1st Battalion, 11th Marines

1st Battalion, 11th Marines
1/11 Insignia
Active20 August 1917 – 11 August 1919
3 December 1923 – 1 October 1947
1 October 1949 – present
Country United States of America
Branch United States Marine Corps
TypeArtillery
RoleProvide fire support to the 1st Marine Division
Size800
Part of11th Marine Regiment
1st Marine Division
Garrison/HQMarine Corps Base Camp Pendleton
San Diego County, California
Motto(s)"Ultima Ratio Regum"
"The Final Argument of Kings"
EngagementsWorld War II

Korean War

Vietnam War
Gulf War
War on terror

Commanders
Current
commander
LtCol Daniel J. O'Connell
Notable
commanders
Harry K. Pickett
Lewis J. Fields

1st Battalion, 11th Marines (1/11) is an artillery battalion comprising five firing batteries and a Headquarters battery. The battalion is stationed at the Marine Corps Base Camp Pendleton in California. Its primary weapon system is the M142 HIMARS rocket artillery launcher and the M777 lightweight howitzer. The battalion is under the command of the 11th Marine Regiment, part of the 1st Marine Division.